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Although a flashlight is a relatively simple device, its invention did not occur until the late 19th century because it depended upon the earlier invention of the electric battery and electric light. Conrad Hubert received a US patent in 1903 , number 737,107 issued August 26, for a flashlight with an on/off switch in the now familiar cylindrical casing containing lamp and batteries. Invention: flashlight in 1902 Function: noun / flash·light, flashlight, flash-light Definition: a small portable battery-powered electric lamp, typically flashlight consists of a small electric light bulb with associated parabolic reflector, powered by electric batteries, and with an electric power switch Patent: 737,107 (US) issued August 26, 1903 Inventor: Conrad Hubert (aka Akiba Horowitz) Criteria: First practical. Modern prototype. Entrepreneur. Birth: April 15, 1856 in Minsk, Russia Death: 1928 Nationality: American (of Russian decent)
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