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http://www.google.ca/patents/US581205?utm_source=gb-gplus-share
Patent US581205 - HEWITT
HEWITT
PETER COOPER HEWITT et al
› Overview
Abstract
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Description
Claims
Patent number
: 581205
Filing date
: 16 Jan 1895
Issue date
: 20 Apr 1897
Inventors
:
PETER COOPER HEWITT
,
PETER COOPER HEWITT
Current U.S. Classification
:
494/13
;
210/365
;
384/426
;
494/15
;
494/46
;
494/84
View patent at USPTO
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