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http://www.google.co.uk/patents/US1497840?utm_source=gb-gplus-share
Patent US1497840 - CLEMENT
CLEMENT
E. E. CLEMENT et al
› Overview
Abstract
Drawings
Description
Claims
Patent number
: 1497840
Filing date
: 26 Sep 1919
Issue date
: 17 Jun 1924
Inventors
:
E. E. CLEMENT
,
E. E. CLEMENT
Current U.S. Classification
:
2/315
;
2/300
;
2/306
;
450/18
;
601/46
;
601/79
View patent at USPTO
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Drawings
Drawings
