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The Gray Matter: The Forgotten Story of the Telephone
     

The Gray Matter: The Forgotten Story of the Telephone

by Burton H. Baker
 

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.

Overview

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.

Product Details

ISBN-13:
9780615113296
Publisher:
Telepress
Publication date:
01/01/2001
Pages:
295
Product dimensions:
6.00(w) x 8.90(h) x 0.90(d)

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