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http://www.google.com/patents/US451499?utm_source=gb-gplus-share
Patent US451499 - WEBSTER L
WEBSTER L
WEBSTER L. MARBLE et al
› Overview
Abstract
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Description
Claims
Patent number
: 451499
Filing date
: May 20, 1890
Issue date
: May 5, 1891
Inventors
:
WEBSTER L. MARBLE
,
WEBSTER L. MARBLE
Current U.S. Classification
:
42/135
View patent at USPTO
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Referenced by
Citing Patent
Filing date
Issue date
Original Assignee
Title
US7100320
Feb 23, 2004
Sep 5, 2006
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