History – On January 20, 1857, William Kelly patented the blast furnace for manufacturing steel. The same basic process was discovered independently by Henry Bessemer…
On January 19, 1878, Thomas Edison patented speaking telegraph (or telephone) in Italy. Although Bell invented telephone first, Edison’s invention of the carbon-button transmitter proved…
On January 18, 1902, Nikola Tesla patented a magnifying transmitter for wireless transmission of electrical energy. In his autobiography, Tesla stated that “. . .…
On January 17, 1882, Leroy Firman received a patent for the telephone switchboard. Patent Information Publication number: US252576 A Patent Title: Multiple switch-board for…
On January 16, 1909, David G Galbraith patented an improved paper clip. Patent Information Publication number: US957764 A Patent Title: Paper Clip Publication type:…
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