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:…
On January 15, 1846, Samuel Morse received patent for an improved single-wire telegraph system. He also helped to develop the commercial use of telegraphy. By…
Patent Information Publication number: US3001739 A Patent Title: Aerial capsule emergency separation device Publication type: Grant…
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