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http://www.google.ca/patents/US2645274?utm_source=gb-gplus-share
Patent US2645274 - BLEACHER BACK REST
BLEACHER BACK REST
Richard Leach et al
› Overview
Abstract
Drawings
Description
Claims
Patent number
: 2645274
Filing date
: 1 Jul 1949
Issue date
: 14 Jul 1953
Inventors
:
Richard Leach
,
Richard Leach
Current U.S. Classification
:
297/352
;
297/373
View patent at USPTO
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Drawings
Drawings
