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Alexander Graham Bell filed a patent application and Elisha Gray filed a caveat, both on February 14, 1876. Bell obtained information from the caveat, then amended his application and made his first speaking telephone. That was the start of the complete telephone business in our country.
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Add The Gray Matter: The Forgotten Story of the Telephone, Alexander Graham Bell filed a patent application and Elisha Gray filed a caveat, both on February 14, 1876. Bell obtained information from the caveat, then amended his application and made his first speaking telephone. That was the start of the complete t, The Gray Matter: The Forgotten Story of the Telephone to the inventory that you are selling on WonderClubX
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Add The Gray Matter: The Forgotten Story of the Telephone, Alexander Graham Bell filed a patent application and Elisha Gray filed a caveat, both on February 14, 1876. Bell obtained information from the caveat, then amended his application and made his first speaking telephone. That was the start of the complete t, The Gray Matter: The Forgotten Story of the Telephone to your collection on WonderClub |