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Americans in 1902, called "Nathan Stubblefield," the country residence of Murray, Kentucky,
made the first wireless phone installed Nathan Stubblefield
Set, this phone...
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Generated byUnregistered Batch DOC TO PDF Converter 2010.
2.
301.
1358, please register!
Americans in 1902, called "Nathan Stubblefield," the country residence of Murray, Kentucky,
made the first wireless phone installed Nathan Stubblefield
Set, this phone can be a wireless mobile communication is the first exploration of the human
"mobile phone" technology research.
In 1938, Bell Laboratories in the U.
S.
for the U.
S.
military
made the world s first mobile phone in April 1973, Motorola Engineering Technician Martin
Cooper invented the world s first one into the civilian mobile phones, "Martin Cooper" from is
called modern "phone parent".
1G
Phone the first generation (1G) is the analog mobile phone is Big Brother in the 1980s and 1990s,
Hong Kong, China, the United States and other film and television works.
First developed a cell
phone is a Motorola, Dr.
Cooper.
Due to the constraints of the battery capacity constraints and
analog modulation techniques need a huge antenna and
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