On December 16, 1914, Charles Francis Jenkins (a prolific inventor) filed a patent for Gravity-railway device, that allows a railway car carrying minerals or passengers…
On December 15, 1964, Kenneth Olsen (founder of DEC) received a patent for “magnetic core memory”. This was the first used in a minicomputer. In 1986,…
On December 14, 1895, H. W. Libbey filed a patent for an electric bicycle. This was second patent granted on electric bicycle. The bicycle propelled…
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