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http://www.google.com/patents/US113240?utm_source=gb-gplus-share
Patent US113240 - IMPROVEMENT IN MAGNETO-ELECTRIC DIAL-TELEGRAPHS
IMPROVEMENT IN MAGNETO-ELECTRIC DIAL-TELEGRAPHS
GEORGE L. ANDERS
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Patent number
: 113240
Issue date
: Apr 4, 1871
Inventor
:
GEORGE L. ANDERS
Original Assignee
:
B
Current U.S. Classification
:
178/17.00R
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