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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]
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 for wireless technology was granted on 2 July that year. The company opened the world's first radio factory on ...
Today it is the site of Marconi Park. It was an early radio transmitter facility built in 1913 and operated by the American Marconi. [44] After the partial failure of transatlantic telegraph cables, the facility was confiscated by the US Navy in January, 1918 to provide vital transatlantic communications during World War I. The New Brunswick ...
The 100 known most prolific inventors based on worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references for an inventor.
U.S. patent 390,414 - Dynamo Electric Machine - 1888 October 2 - Related to the patents of Tesla and Charles F. Peck, numbers: US381968 and US382280; Ordinary forms of continuous and alternate current systems may be adapted to Tesla's system, with slight changes to the systems; Effects their forms; Only the best and most practical solutions are ...
The National Inventors Hall of Fame is an American not-for-profit organization, founded in 1973, which recognizes individual engineers and inventors who hold a U.S. patent of significant technology. As of 2020, 603 inventors have been inducted, mostly constituting historic persons from the past three centuries, but including about 100 living ...
Looking to expand their efforts worldwide, a roster of subsidiary companies was established, holding regional rights to the Marconi patents. The Marconi Wireless Telegraph Company of America was incorporated in New Jersey [2] on November 8, 1899 as the first subsidiary company. It was granted the "sole right to use and exploit the Marconi ...
As part of worldwide expansion, in 1899 American Marconi was organized as a subsidiary company, holding the rights to use the Marconi patents in the United States and Cuba. [3] In 1912 it took over the assets of the bankrupt United Wireless Telegraph Company , and from that point forward it became the dominant radio communications company in ...