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Rene Laennec

Stethoscope

French physician and inventor René Théophile Hyacinthe Laennec sealed his place in history with a number of important c

Hedy Lamarr

Military Communications System

Silver Screen actress Hedy Lamarr (born in 1914) enjoyed one of the more memorable careers in Hollywood.

Chelsea Lanmon

The Pocket Diaper

Chelsea Lanmon’s inspiration for her first and most prominent invention was completely practical.  At the age of five,

Lewis Latimer

Improvement to the carbon-filament used for light bulbs

Lewis H. Latimer was born in Chelsea, Massachusetts in 1848. Along with Granville T.

Ernest Lawrence

The Cyclotron

After earning a BS from his home state's University of South Dakota (1922) and a PhD in Physics from Yale University (1

Florence Lawrence

Vehicle Turn Indicator & Full-Stop Signal

It wasn’t an engineer, an auto mechanic, or a scientist who came up with two of the most indispensable early automobile

Robert Ledley

Computer Tomography (CT) Scanner

Robert S. Ledley, inventor of the full-body Computer Tomography (CT) scanner, was born in 1926 in New York City.

Nicki Lehrer

“The Gripper”

Inventors often speak of a phenomenon that they call the “aha moment” – the moment an ingenious solution to a problem p

Gottfried Leibniz

Differential and Integral Calculus

Gottfried Wilhelm Leibniz was born in Leipzig, Germany in 1646. His father died when he was just five years old.

Jerome Lemelson

Machine Vision Technology

Jerome H. Lemelson (1923-1997) was one of the most prolific American inventors of all time.

David Lennox

Furnace

David Lennox was born in Detroit, Michigan on April 15, 1855.

David Levy

The World's Smallest Keyboard

David Levy of Manhattan Beach, California, received his doctoral degree in Mechanical Engineering at MIT in 1997 and ha

Gilbert Lewis

"Heavy Water"

Gilbert Newton Lewis, one of the most influential and admired scientists of the twentieth century, was a pioneer in bot

Otto Lilienthal

Advances in Heavier-Than-Air-Flight

Aviation pioneer Otto Lilienthal designed and built several novel, unpowered gliders with which he was able to demonstr