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http://www.google.com/patents/US461472?utm_source=gb-gplus-share
Patent US461472 - ART OF AND APPARATUS FOR TELAUTOGRAPHIC COMMUNICATION
ART OF AND APPARATUS FOR TELAUTOGRAPHIC COMMUNICATION
AET OF-
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Patent number
: 461472
Filing date
: Sep 17, 1889
Issue date
: Oct 20, 1891
Inventor
:
AET OF-
Current U.S. Classification
:
178/18.01
View patent at USPTO
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