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Martin Cooper (inventor) Martin Cooper (born December 26, 1928) is an American engineer. He is a pioneer in the wireless communications industry, especially in radio spectrum management, with eleven patents in the field. [2][3] On April 3, 1973, he placed the first public call from a handheld portable cell phone while working at Motorola, from ...
A DynaTAC 8000X; the first commercially available mobile phone from 1983. Electrical engineer Martin Cooper of Motorola made the first publicized handheld mobile phone call on a prototype DynaTAC model on April 3, 1973. This is a reenactment in 2007. The DynaTAC is a series of cellular telephones manufactured by Motorola from 1983 to 1994.
Martin Cooper photographed in 2007 with his 1972 handheld mobile phone prototype. Prior to 1973, mobile telephony was limited to phones installed in cars and other vehicles. [ 22 ] The first portable cellular phone commercially available for use on a cellular network was developed by E.F. Johnson and Millicom, Inc . [ 29 ]
Martin Cooper. Martin or Marty Cooper may refer to: Martin Cooper (musicologist) (1910–1986), English music critic and author. Martin Cooper (inventor) (born 1928), designer of the first mobile phone. Marty Cooper (musician) (born 1942), American musician. Martin Cooper (rugby union) (born 1948), England international rugby union player.
President & COO. Vice chairman. John Francis Mitchell (January 1, 1928 – June 9, 2009) was an American electronics engineer and president and chief operating officer of Motorola. [3] [4] Mitchell led the pioneering development and implementation of Motorola's mobile phone technology producing the first portable transistorized pager and cell ...
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Signature. James Marion Sims (January 25, 1813 – November 13, 1883) was an American physician in the field of surgery. His most famous work was the development of a surgical technique for the repair of vesicovaginal fistula, a severe complication of obstructed childbirth. [3] He is also remembered for inventing the Sims speculum, Sims sigmoid ...
Rosa Cooper. . (m. 2000) . Children. 6. Henry Edward Roberts (September 13, 1941 – April 1, 2010) was an American engineer, entrepreneur and medical doctor who invented the first commercially successful personal computer in 1974. [1] He is most often known as " the father of the personal computer." [2]