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http://www.google.com/patents/US349611?utm_source=gb-gplus-share
Patent US349611 - SIGNOE TO GEOEGE WESTING HOUSE
SIGNOE TO GEOEGE WESTING HOUSE
WILLIAM STANLEY
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Description
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Patent number
: 349611
Issue date
: Sep 21, 1886
Inventor
:
WILLIAM STANLEY
Current U.S. Classification
:
336/20
;
324/239
;
336/134
;
336/220
;
336/233
View patent at USPTO
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