Bell-gray-smoking-gun
Autor:
Elisha Gray and Alexander Graham Bell
Credit:
Photo illustration based on Alexander Graham Bell's notebooks and a patent caveat filed by Elisha Gray. Featured in Seth Schulman's book en:The Telephone Gambit and his notes at [1]
Krótki link:
źródło:
Wymiary:
881 x 659 Pixel (349118 Bytes)
Opis:
Comparison of the illustration of the telephone in Alexander Graham Bell's diaries and Elisha Gray's patent application.
Licencja:
Public domain
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