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…
Tag: Telegraph
This Day in Patent History - On January 15, 1846, Samuel Morse received patent for an improved single-wire telegraph system
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…
This Day in Patent History – On November 17, 1891, Emile Berliner was issued a patent for a combined telegraph and telephone
On November 17, 1891, Emile Berliner was issued a patent for a combined telegraph and telephone. …