Gray's Telephone system
Gray's 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
Picture No
13846534
Media ID
45746991
Size
3721px x 2823px
(880KB)
Credit
Mary Evans Picture Library
Source
Unattributed engraving
Date
1876
