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Born on this day
William Alfred Fowler
William Alfred "Willy" Fowler was an American astrophysicist and a Nobel Prize winner.
32nd week in year
9 August 2024

Important eventsBack

Thomas Edison receives a patent for a two-way telegraph.9.8.1892

Wikipedia (26 Jul 2013, 11:34)
Further advancements in telegraph technology occurred in the early 1870s, when Thomas Edison devised a full duplex two-way telegraph and then doubled its capacity with the invention of quadruplex telegraphy in 1874. Edison filed for a U.S. patent on the duplex telegraph on 1 September 1874 and received U.S. Patent 480,567 on 9 August 1892.




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