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Before the discovery of electromagnetic waves and the development of radio communication, there were many wireless telegraph systems proposed and tested. [4] In April 1872 William Henry Ward received U.S. patent 126,356 for a wireless telegraphy system where he theorized that convection currents in the atmosphere could carry signals like a telegraph wire. [5]
An employee of the Marconi Company, England, 1906 Marconi Wireless Station in Somerset, New Jersey, in 1921 Marconi advertisement from the 26 October 1923 issue of The Radio Times, threatening prosecution for infringements of Marconi patents . Marconi's "Wireless Telegraph and Signal Company" was formed on 20 July 1897 after a British patent ...
This "four sevens" patent — so named because Marconi's U.S. patent No. 763,772 was a counterpart to the original filing, British patent No. 7,777 — was also found to be invalid, with the court ruling that it had been anticipated by John Stone Stone's U.S. patent 714,756 as well as those by Lodge and Tesla. The verdict stated that “Marconi ...
[77] [33] Tesla sued Marconi's company for patent infringement but didn't have the resources to pursue the action. In 1943 the US Supreme Court invalidated the inductive coupling claims of Marconi's patent [78] due to the prior patents of Lodge, Tesla, and Stone, but this came long after spark transmitters had become obsolete. [71] [63]
The matter from the old "Invention of Radio" text is all in History of radio, except for the Tesla and Marconi matter, which are in separate pages, as stated above. I have copied relevant matter about Tesla and Marconi into Great Radio Controversy, but I did not delete it from other pages. Anthony Appleyard 13:43, 22 September 2006 (UTC)
The settlement requires Tesla board members including Denholm and Murdoch to return roughly $277 million in cash, $459 million in stock options and to forgo stock options for 2021-23 worth $184 ...
Tesla chief Elon Musk is ready to share the family jewels. Musk says he will allow access to the company's proprietary technology to any car company that wants to build an electric vehicle.
The United Wireless Telegraph Company was the largest radio communications firm in the United States, from its late-1906 formation until its bankruptcy and takeover by Marconi interests in mid-1912. At the time of its demise, the company was operating around 70 land and 400 shipboard radiotelegraph installations — by far the most in the U.S.