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101 Inventions That Changed the World in the Last 100 Years
use in 1919. 79. Alkaline battery Three people filed the patent for the alkaline battery in 1957: Lewis Urry, Karl Kordesch, and P.A. Marsal. The patent was granted in 1960 and assigned to the Union Carbide
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Top 100 Famous Inventions and Greatest Ideas of All Time
Edison figured out carbonized bamboo was an ideal filament because it could burn for over 1,200 hours. Lewis Howard Latimer and Willis R. Whitney invented more efficient methods to produce the carbon filament