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Grays Telephone system
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Grays Telephone system
Grays Telephone system. Elisha Gray (1835 - 1901) developed a telephone prototype in 1876 in Highland Park, Illinois and is considered by many to be the true inventor of the variable resistance telephone. Despite losing out to Alexander Graham Bell for the telephone, Gray was awarded over 70 patents for his inventions
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Media ID 4422129
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1876 Apparatus Circuit Communication Device Electric Electrical Electricity Gray Invention Prototype Resistance Technical Telecommunication Telephone Telephonic Variable Mouth Piece
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