Mark Skolnick1980 · American scientist and businessman (born 1946) (placed at Temple)1980: Scientists Mark Skolnick , Ron Davis, Ray White, and David Botstein published their findings on a gene mapping tool using Restriction Fragment-length Polymorphisms (RFLP), that would have applications to identify heritable disorders, including some forms of cancer.https://en.wikipedia.org/wiki/Mark_Skolnick
CD-ROM1982 · Pre-pressed compact disc containing computer data (placed at Kawasaki (Denon headquarters))Invented or discovered by: Denon. Discovered or invented: 1982. 1982: A CD-ROM contains data accessible to, but not writable by, a computer for data storage and music playback. The 1985 Yellow Book standard developed by Sony and Philips adapted the format to hold any form of binary data .https://en.wikipedia.org/wiki/CD-ROM
Kary Mullis1984 · American biochemist (1944–2019) (placed at Lenoir)The polymerase chain reaction (PCR) is a technique widely used in molecular biology. It derives its name from one of its key components, a DNA polymerase used to amplify a piece of DNA by in vitro enzymatic DNA replication. As PCR progresses, the DNA generated is used as a template for replication. https://en.wikipedia.org/wiki/Kary_Mullis
Mobile phone1984 · Portable device to make telephone calls using a radio link (placed at Chicago (where Martin Cooper was born))Invented or discovered by: Martin Cooper. Discovered or invented: 1973. 1984: The first commercially available cell phone in the US, the DynaTAC 8000X, is created by Motorola .https://en.wikipedia.org/wiki/Mobile_phone
Amiga1985 · Invention · Family of personal computers sold by Commodore (placed at West Chester (Commodore International headquarters))https://en.wikipedia.org/wiki/Amiga
Chuck Hull1986 · American technology inventor (born 1939) (placed at Clifton)Stereolithography is a common rapid manufacturing and rapid prototyping technology for producing parts with high accuracy and good surface finish by utilizing a vat of liquid UV-curable photopolymer "resin" and a UV laser to build parts a layer at a time. Stereolithography was invented by Chuck Hullhttps://en.wikipedia.org/wiki/Chuck_Hull
Larry Wall1987 · American computer programmer (born 1954) (placed at Los Angeles)Perl is a high-level, general-purpose, interpreted, dynamic programming language. It was originally invented by Larry Wall , a linguist working as a systems administrator for NASA, in 1987, as a general purpose Unix scripting language to make report processing easier. Perl is also used for text prochttps://en.wikipedia.org/wiki/Larry_Wall
Murray Jarvik1988 · American pharmacologist (placed at New York City)A nicotine patch is a transdermal patch that releases nicotine into the body through the skin. It is usually used as a method to quit smoking. The nicotine patch was invented in 1988 by Murray Jarvik , Jed Rose and Daniel Rose.https://en.wikipedia.org/wiki/Murray_Jarvik
Karlheinz Brandenburg1989 · German electrical engineer and mathematician (placed at Erlangen)1989: Karlheinz Brandenburg would publish the audio compression algorithms that would be standardised as the: MPEG-1, layer 3 ( mp3 ), and later the MPEG-2, layer 7 Advanced Audio Compression (AAC).https://en.wikipedia.org/wiki/Karlheinz_Brandenburg
Phil Katz1989 · American software developer (1962–2000) (placed at Milwaukee)The ZIP file format is a data compression and file archiver. A ZIP file contains one or more files that have been compressed to reduce file size, or stored as-is. The zip file format was originally invented in 1989 by Phil Katz for PKZIP, and evolved from the previous ARC compression format by Thom https://en.wikipedia.org/wiki/Phil_Katz
World Wide Web1989 · Linked hypertext system on the Internet (placed at CERN)Invented or discovered by: Tim Berners-Lee, Robert Cailliau. Discovered or invented: 1989. Made in: CERN. 1989: The World Wide Web is invented by computer scientist Tim Berners-Lee .https://en.wikipedia.org/wiki/World_Wide_Web
Rediet Abebe1991 · Ethiopian computer scientist (born 1991) (placed at Addis Ababa)Abebe, Rediet 1991- computer scientist First woman computer scientist to be appointed to the Harvard Society of Fellowshttps://en.wikipedia.org/wiki/Rediet_Abebe
Bluetooth1994 · Short-range wireless technology standard (placed at The Hague (where Jaap Haartsen was born))Invented or discovered by: Jaap Haartsen. 1994: First generation of Bluetooth is developed by Ericsson Mobile . A form of data communication on short distances between electronic deviceshttps://en.wikipedia.org/wiki/Bluetooth
IBM Simon1994 · Smartphone model (placed at Chiyoda (Mitsubishi Electric headquarters))1994: IBM Simon , the world's first smartphone , is developed by IBM . It had a touchscreen and the first built-in apps for a mobile device .https://en.wikipedia.org/wiki/IBM_Simon
Tetris1994 · Puzzle video game (placed at Russian Academy of Sciences)Made in: Russian Academy of Sciences. 1994: A Tetris variant on the Hagenuk MT-2000 device becomes the first mobile gamehttps://en.wikipedia.org/wiki/Tetris
Torino scale1996 · Invention · Measure for hazard from asteroid or comet impacts on Earth (placed at Washington Court House (where Richard P. Binzel was born))Invented or discovered by: Richard P. Binzel.https://en.wikipedia.org/wiki/Torino_scale
Amy B. Smith1999 · American inventor and engineer (placed at Lexington)The phase-change incubator is a low-cost, low-maintenance incubator to help test for microorganisms in water supplies. It uses small balls containing a chemical compound that, when heated and then kept insulated, will stay at 37 °C (approx. 99 °F) for 24 hours. MIT professor and engineer Amy B. Smithttps://en.wikipedia.org/wiki/Amy_B._Smith
Richard P. Binzel1999 · American astronomer (placed at Washington Court House)The Torino scale, invented by Richard P. Binzel in 1999, is a method for categorizing the impact hazard associated with near-Earth objects (NEOs) such as asteroids and comets. It was intended as a tool for astronomers and the public to assess the seriousness of collision predictions, by combining prhttps://en.wikipedia.org/wiki/Richard_P._Binzel
Wheelchair1999 · Chair with wheels used by people with mobility deficiencies (placed at Hartford (Numotion (United States) headquarters))The iBOT is a stable and mobile powered wheelchair that balances on two of a total of six wheels. The iBOT is capable of climbing stairs as well as giving the user the ability to make eye-contact with a standing individual. Dean Kamen invented the iBOT in 1999. Kamen filed U.S. patent #6311794 on Ochttps://en.wikipedia.org/wiki/Wheelchair
SlamBall2002 · Invention · Hybrid sport, variant of basketball (placed at Los Angeles (where Mason Gordon was born))Invented or discovered by: Mason Gordon.https://en.wikipedia.org/wiki/SlamBall
Deborah S. Jin2003 · American physicist (placed at Stanford)A fermionic condensate is a superfluid phase formed by fermionic particles at low temperatures. The first atomic fermionic condensate was invented by Deborah S. Jin in 2003.https://en.wikipedia.org/wiki/Deborah_S._Jin
Lidar2010 · Method of spatial measurement using laser (placed at Culver City (Hughes Aircraft Company headquarters))Invented or discovered by: Hughes Aircraft Company. Discovered or invented: 1961. 2010: Solid-state Lidar technology was introduced, replacing mechanical scanning with electronic beam steeringhttps://en.wikipedia.org/wiki/Lidar
Corn Ranch2015 · Spaceport operated by Blue OriginThe first rocket capable of exiting Earth's atmosphere, returning, and landing safely did so on November 23, 2015, in Corn Ranch , Texas . Blue Origin 's New Shepard rocket was the first to accomplish the feat, followed soon after by SpaceX 's Falcon 9 rocket. SpaceX now routinely recovers and reusehttps://en.wikipedia.org/wiki/Corn_Ranch
MRNA vaccine2020 · Type of vaccine (placed at Mainz (BioNTech headquarters))Invented or discovered by: Katalin Karikó, Drew Weissman. Made in: BioNTech. 2020: The first mRNA vaccine to be approved by public health medicines regulators is co-developed by Pfizer and BioNTech for COVID-19 , with the potential to treat other diseases and cancerhttps://en.wikipedia.org/wiki/MRNA_vaccine
Alfred Vail19th-century American machinist and inventor (placed at Morristown)Morse code is a type of character encoding that transmits telegraphic information using rhythm. Morse code uses a standardized sequence of short and long elements to represent the letters, numerals, punctuation, and special characters of a given message. After many years of development, an electricahttps://en.wikipedia.org/wiki/Alfred_Vail
BIOSInvention · Firmware for hardware initialization and OS runtime services (placed at Seattle (where Gary Kildall was born))Invented or discovered by: Gary Kildall.https://en.wikipedia.org/wiki/BIOS
Barbed wireInvention · Type of steel fencing wire constructed with sharp edges or points (placed at Charlestown (where Joseph Glidden was born))Invented or discovered by: Joseph Glidden, Lucien B. Smith.https://en.wikipedia.org/wiki/Barbed_wire
BaseballInvention · Bat-and-ball game (placed at Ballston Spa (where Abner Doubleday was born))Invented or discovered by: Abner Doubleday. Discovered or invented: 1900.https://en.wikipedia.org/wiki/Baseball
BathysphereInvention · Unpowered spherical deep-sea observation submersible lowered on a cable (placed at New York City (where Otis Barton was born))Invented or discovered by: Otis Barton.https://en.wikipedia.org/wiki/Bathysphere
Bee smokerInvention · Device which produces smoke; used in beekeeping (placed at New Castle (where Moses Quinby was born))Invented or discovered by: Moses Quinby.https://en.wikipedia.org/wiki/Bee_smoker
Benjamin Chew TilghmanAmerican soldier and inventor (placed at Philadelphia)Sandblasting or bead blasting is a generic term for the process of smoothing, shaping, and cleaning a hard surface by forcing solid particles across that surface at high speeds. Sandblasting equipment typically consists of a chamber in which sand and air are mixed. The mixture travels through a handhttps://en.wikipedia.org/wiki/Benjamin_Chew_Tilghman
BifocalsInvention · Eyeglasses with two distinct optical powers (placed at Boston (where Benjamin Franklin was born))Invented or discovered by: Benjamin Franklin.https://en.wikipedia.org/wiki/Bifocals
BolometerInvention · Device for measuring incident electromagnetic radiation (placed at Roxbury (where Samuel Langley was born))Invented or discovered by: Samuel Langley. Discovered or invented: 1878.https://en.wikipedia.org/wiki/Bolometer
Bubble gumInvention · Type of chewing gum (placed at Philadelphia (where Walter Diemer was born))Invented or discovered by: Walter Diemer. Discovered or invented: 1928.https://en.wikipedia.org/wiki/Bubble_gum
CMOSTechnology for constructing integrated circuits (placed at Thatcher (where Frank Wanlass was born))Invented or discovered by: Frank Wanlass. A CMOS image sensor ( complementary metal-oxide semiconductor ) is an image sensor consisting of an integrated circuit containing an array of pixel sensors, each pixel containing a photodetector and an active amplifier. Starting at the same point, they have https://en.wikipedia.org/wiki/CMOS
Cotton ginInvention · Machine that separates cotton from seeds (placed at Westborough (where Eli Whitney was born))Invented or discovered by: Eli Whitney. Discovered or invented: 1793.https://en.wikipedia.org/wiki/Cotton_gin
Courtney FitzhughAmerican doctor (placed at Los Angeles)Fitzhugh, Courtney hematologist - oncologist and scientist Clinical researcher and head of the laboratory of early sickle cell mortality prevention at the National Heart, Lung, and Blood Institutehttps://en.wikipedia.org/wiki/Courtney_Fitzhugh
CuriumInvention · Chemical element with atomic number 96 (Cm) (placed at Ishpeming (where Glenn Theodore Seaborg was born))Invented or discovered by: Glenn Theodore Seaborg. Discovered or invented: 1944.https://en.wikipedia.org/wiki/Curium
Daniel Chapman StillsonAmerican inventor (placed at Durham)The pipe wrench, or Stillson wrench, is an adjustable wrench used for turning soft iron pipes and fittings with a rounded surface. The design of the adjustable jaw allows it to rock in the frame, such that any forward pressure on the handle tends to pull the jaws tighter together. Teeth angled in thhttps://en.wikipedia.org/wiki/Daniel_Chapman_Stillson
David Bradley (engineer)American academic and engineer (placed at Seattle)Control-Alt-Delete, often abbreviated as Ctrl-Alt-Del, is a computer keyboard command on PC compatible systems that can be used to reboot a computer, and summon the task manager or operating system. It is invoked by pressing the Delete key while holding the Control and Alt keys: Ctrl+Alt+Delete. Thuhttps://en.wikipedia.org/wiki/David_Bradley_%28engineer%29
DishwasherInvention · Machine that washes dishes automatically (placed at Shelbyville (where Josephine Cochrane was born))Invented or discovered by: Josephine Cochrane.https://en.wikipedia.org/wiki/Dishwasher
Donald RoeblingAmerican philanthropist, engineer, industrial designer, and inventor (1908–1959) (placed at New York City)A Landing Vehicle Tracked (LVT), also known as amtracks, alligators, or Buffaloes, were amphibious tracked vehicles capable of crawling out of the water and onto the beach and beyond. Used primarily by the United States Armed Forces in the Pacific War against the Empire of Japan during World War II,https://en.wikipedia.org/wiki/Donald_Roebling
Dorr FeltAmerican inventor and industrialist (1862–1930) (placed at Newark)A comptometer is a mechanical or electro-mechanical adding machine. The comptometer was the first adding device to be driven solely by the action of pressing keys, which are arranged in an array of vertical and horizontal columns. Although the comptometer was designed primarily for adding, it could https://en.wikipedia.org/wiki/Dorr_Felt
Earle HaasAmerican physician and inventor (1888–1981) (placed at McPherson County)A tampon is a mass of absorbent material into a body cavity or wound to absorb bodily fluid. The most common type in daily use is disposable and designed to be inserted into the vagina during menstruation to absorb the flow of blood. The ancient Egyptians first invented disposable tampons made of sohttps://en.wikipedia.org/wiki/Earle_Haas
Edward MaynardAmerican firearms inventor (placed at Madison)The Maynard tape primer is a system designed to allow for more rapid reloading of muskets which previously relied on small copped caps that were filled with mercury fulminate. Dr. Edward Maynard , a dentist with an interest in firearms, embedded tiny pellets of priming material in thin strips of paphttps://en.wikipedia.org/wiki/Edward_Maynard
Edwin Howard ArmstrongAmerican electrical engineer and inventor (1890–1954) (placed at Manhattan)The regenerative circuit allows an electronic signal to be amplified many times by the same vacuum tube or other active component such as a field effect transistor. A regenerative circuit is often an AM detector, converting the RF signal on the antenna to an audio waveform. Their use of positive feehttps://en.wikipedia.org/wiki/Edwin_Howard_Armstrong
Electric penInvention · Part of a device for duplicating handwritten documents (placed at Milan (where Thomas Edison was born))Invented or discovered by: Thomas Edison, Charles Batchelor.https://en.wikipedia.org/wiki/Electric_pen
Eli WhitneyAmerican inventor (1765–1825) (placed at Westborough)The cotton gin is a machine that separates cotton fibers from seedpods and sometimes sticky seeds, a job previously done by hand. These seeds are either used again to grow more cotton or, if badly damaged, disposed of. The cotton gin uses a combination of a wire screen and small wire hooks to pull thttps://en.wikipedia.org/wiki/Eli_Whitney
Elisha GrayAmerican electrical engineer (1835–1901) (placed at Barnesville)A synthesizer is an electronic instrument capable of producing sounds by generating electrical signals of different frequencies. These electrical signals are played through a loudspeaker or set of headphones. Synthesizers can usually produce a wide range of sounds, which may either imitate other inshttps://en.wikipedia.org/wiki/Elisha_Gray
Emmett ChapmanAmerican jazz musician (1936–2021) (placed at Santa Barbara)A polyphonic member of the guitar family, the Chapman Stick is an electric musical instrument used for music recordings to play various parts such as bass, lead, chords, and textures. The Chapman Stick looks like a wide version of the fretboard of an electric guitar, but having 8, 10 or 12 strings. https://en.wikipedia.org/wiki/Emmett_Chapman
EthernetInvention · Open standard family of wired computer networking protocols (placed at Brooklyn (where Robert Metcalfe was born))Invented or discovered by: Robert Metcalfe, David Boggs.https://en.wikipedia.org/wiki/Ethernet
Ferris wheelInvention · Amusement ride (placed at Galesburg (where George Washington Gale Ferris, Jr. was born))Invented or discovered by: George Washington Gale Ferris, Jr.. Discovered or invented: 1893.https://en.wikipedia.org/wiki/Ferris_wheel
Frank Bunker GilbrethAmerican industrial engineer (1868–1924) (placed at Fairfield)A flowchart is common type of chart, representing an algorithm or process, showing the steps as boxes of various kinds, and their order by connecting these with arrows. Flowcharts are used in analyzing, designing, documenting or managing a process or program in various fields. The second structured https://en.wikipedia.org/wiki/Frank_Bunker_Gilbreth
Frederick Gardner CottrellAmerican physical chemist, inventor and philanthropist (placed at Oakland)An electrostatic precipitator (ESP), or electrostatic air cleaner is a particulate collection device that removes particles from a flowing gas (such as air) using the force of an induced electrostatic charge. Electrostatic precipitators are highly efficient filtration devices that minimally impede thttps://en.wikipedia.org/wiki/Frederick_Gardner_Cottrell
Frying Pan (guitar)First electric lap steel guitar (placed at Santa Ana (Rickenbacker headquarters))An electric guitar is a guitar using pickups to convert its metal string vibration into electricity. This is amplified with an instrument amplifier. The output is altered with guitar effects such as reverb or distortion. The earliest electric guitar, known as a "frying pan" , was a hollow bodied acohttps://en.wikipedia.org/wiki/Frying_Pan_%28guitar%29
George NissenAmerican inventor of the modern trampoline (1914–2010) (placed at Blairstown)A trampoline is a gymnastic and recreational device consisting of a piece of taut, strong fabric stretched over a steel frame using many coiled springs to provide a rebounding force which propels the jumper high into the air. In a trampoline, the fabric is not elastic itself; the elasticity is provihttps://en.wikipedia.org/wiki/George_Nissen
George SpeckAmerican chef (1824–1914) (placed at Saratoga)Potato chips, also known as crisps in British English, are thin slices of potato that are deep fried or baked until crispy. Potato chips serve as an appetizer, side dish, or snack. The basic chips are cooked and salted, and additional varieties are manufactured using various flavorings and ingredienhttps://en.wikipedia.org/wiki/George_Speck
Gordon Matthews (inventor)(placed at Tulsa)Voicemail is the managing of telephone messages from a centralized data storing system. Vociemail is stored on hard disk drives, media generally used by computers in order to store other forms of data. Messages are recorded in digitized natural human voice similar to how music is stored on a compacthttps://en.wikipedia.org/wiki/Gordon_Matthews_%28inventor%29
Grace HopperU.S. naval officer and computer scientist (1906–1992) (placed at New York City)A compiler is a computer program or set of programs that transforms source code written in a computerized source language into another computer language often having a binary form known as an object code. The most common reason for wanting to transform source code is to create an executable program.https://en.wikipedia.org/wiki/Grace_Hopper
GraphophoneInvention · Phonograph (placed at Edinburgh (where Alexander Graham Bell was born))Invented or discovered by: Alexander Graham Bell, Charles Sumner Tainter. Discovered or invented: 1885.https://en.wikipedia.org/wiki/Graphophone
Great PlainsFlat expanse in western North AmericaA refrigerator car or "reefer" is a refrigerated boxcar, designed to carry perishable freight at specific temperatures. Refrigerator cars differ from simple insulated boxcars and ventilated boxcars, neither of which are fitted with cooling apparatus. They can be ice-cooled, or use one of a variety ohttps://en.wikipedia.org/wiki/Great_Plains
Harvey FletcherAmerican physicist (1884–1981) (placed at Provo)An audiometer is a machine used for evaluating hearing loss. Audiometers are standard equipment at ENT clinics and in audiology centers. They usually consist of an embedded hardware unit connected to a pair of headphones and a feedback button, sometimes controlled by a standard PC. The invention of https://en.wikipedia.org/wiki/Harvey_Fletcher
Hiram Percy MaximAmerican inventor and radio pioneer (1869–1936) (placed at Brooklyn)A suppressor or silencer is a device either attached to or part of the barrel of a firearm to reduce the amount of noise and flash generated by firing the weapon. It generally takes the form of a cylindrically shaped metal tube with various internal mechanisms to reduce the sound of firing by slowinhttps://en.wikipedia.org/wiki/Hiram_Percy_Maxim
Homer DudleyAmerican electronic and acoustic engineer (placed at Virginia)A vocoder, a portmanteau of the words voice and encoder, is an analysis and synthesis system, mostly used for speech. In the encoder, the input is passed through a multiband filter, each band is passed through an envelope follower, and the control signals from the envelope followers are communicatedhttps://en.wikipedia.org/wiki/Homer_Dudley
Hugh BradnerAmerican physicist, neoprene wetsuit inventor (1915–2008) (placed at Tonopah)A wetsuit is a garment, usually made of foamed neoprene, which is worn by divers, windsurfers, canoeists, and others engaged in water sports, providing thermal insulation, abrasion resistance and buoyancy. The insulation properties depend on bubbles of gas enclosed within the material, which reduce https://en.wikipedia.org/wiki/Hugh_Bradner
Hyman G. RickoverUS Navy admiral (placed at Maków Mazowiecki)The USS Nautilus (SNN 571), the world's first nuclear submarine, revolutionized naval warfare. Conventional submarines need two engines: a diesel engine to travel on the surface and an electric engine to travel submerged, where oxygen for a diesel engine is not available. By relying on nuclear capabhttps://en.wikipedia.org/wiki/Hyman_G._Rickover
Iwan SerrurierDutch-American electrical engineer; invented the Moviola (placed at Leiden)A Moviola is a device that allows a film editor to view film while editing. It was the first machine for motion picture editing in order to study individual shots in their cutting rooms that determine where the best cut-point might be. The vertically oriented Moviolas were the standard for film edithttps://en.wikipedia.org/wiki/Iwan_Serrurier
JackhammerInvention · Pneumatic tool (placed at Angel Island (where Charles Brady King was born))Invented or discovered by: Charles Brady King. Discovered or invented: 1893.https://en.wikipedia.org/wiki/Jackhammer
John B. StetsonAmerican hat maker (1830–1906) (placed at Orange)The cowboy hat is a high-crowned, wide-brimmed hat best known as the defining piece of attire for the North American cowboy. Today it is worn by many people, and is particularly associated with ranch workers in the western and southern United States, western Canada and northern Mexico, with country-https://en.wikipedia.org/wiki/John_B._Stetson
John BackusAmerican computer scientist (1924–2007) (placed at Philadelphia)Fortran is a general-purpose, procedural, and imperative programming language that is especially suited to numeric computation and scientific computing. Fortran came to dominate this area of programming early on and has been in continual use for over half a century in computationally intensive areashttps://en.wikipedia.org/wiki/John_Backus
John Deere (inventor)American blacksmith and manufacturer (1804–1886) (placed at Rutland)T he plow is a tool used in farming for initial cultivation of soil in preparation for sowing seed or planting. It has been a basic instrument for most of recorded history, and represents one of the major advances in agriculture. In modern use, a plowed field is typically left to dry out, and is harhttps://en.wikipedia.org/wiki/John_Deere_%28inventor%29
John FroelichAmerican inventor (1849-1933) (placed at Iowa)A tractor is a distinctive farm vehicle specifically designed to deliver a high tractive effort at slow speeds, for the purposes of hauling a trailer or machinery used in agriculture or construction. Agricultural implements may be towed behind or mounted on the tractor, and the tractor may also provhttps://en.wikipedia.org/wiki/John_Froelich
Joseph GayettyInventor of toilet paper (placed at Pennsylvania)Toilet paper is a soft paper product (tissue paper) used to maintain personal hygiene after human defecation or urination. However, it can also be used for other purposes such as absorbing spillages or craft projects. Toilet paper in different forms has been used for centuries, namely in China. The https://en.wikipedia.org/wiki/Joseph_Gayetty
Joseph GliddenAmerican inventor (1813–1906) (placed at Charlestown)Barbed wire is a type of fencing wire constructed with sharp edges or points arranged at intervals along the strands. It is used to construct inexpensive fences and is used atop walls surrounding secured property. It is also a major feature of the fortifications in trench warfare. A person or animalhttps://en.wikipedia.org/wiki/Joseph_Glidden
Ken R. HarewoodAmerican molecular biologist (placed at Barbados)Harewood, Ken R. Molecular biologist GlaxoSmithKline Distinguished Professor and Director of the North Carolina Central University (NCCU) Julius L. Chambers Biomedical/ Biotechnology Research institute and recognized for his work in the fields of cancer biology and cancer drug discovery .https://en.wikipedia.org/wiki/Ken_R._Harewood
KinetoscopeInvention · Motion picture exhibition device (placed at New York City)Invented or discovered by: Thomas Edison. Discovered or invented: 1889. Made in: New York City.https://en.wikipedia.org/wiki/Kinetoscope
Lee de ForestAmerican inventor (1873–1961) (placed at Council Bluffs)The Audion is an electronic amplifier device and was the forerunner of the triode, in which the current from the filament to the plate was controlled by a third element, the grid. A small amount of power applied to the grid could control a larger current from the filament to the plate, allowing the https://en.wikipedia.org/wiki/Lee_de_Forest
Lester Allan PeltonAmerican mechanical engineer (placed at Ohio)A free jet water turbine or impulse water turbine, also commonly known as a Pelton's wheel, is a wheel that uses cups, or buckets, that are split down the middle by a metal divider, so that in effect two cups are mounted side by side at each "spoke" in the wheel. A high-pressure water jet aimed at thttps://en.wikipedia.org/wiki/Lester_Allan_Pelton
Lightning rodInvention · Metal rod intended to protect a structure from a lightning strike (placed at Boston (where Benjamin Franklin was born))Invented or discovered by: Benjamin Franklin. Discovered or invented: 1752.https://en.wikipedia.org/wiki/Lightning_rod
Likert scaleInvention · Psychometric measurement scale (placed at Cheyenne (where Rensis Likert was born))Invented or discovered by: Rensis Likert. Discovered or invented: 1932.https://en.wikipedia.org/wiki/Likert_scale
Linus Yale Sr.American manufacturer of locks (1797–1858) (placed at Middletown)The pin tumbler lock is a lock mechanism that uses pins of varying lengths to prevent the lock from opening without the correct key. Pin tumblers are most commonly employed in cylinder locks, but may also be found in tubular or radial locks. The earliest pin-tumble locks were made over 4,000 years ahttps://en.wikipedia.org/wiki/Linus_Yale_Sr.