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http://www.google.co.uk/patents/US2796280?utm_source=gb-gplus-share
Patent US2796280 - PONDER
PONDER
Raymond E. Ponder et al
› Overview
Abstract
Drawings
Description
Claims
Patent number
: 2796280
Filing date
: 19 Sep 1955
Issue date
: 18 Jun 1957
Inventors
:
Raymond E. Ponder
,
Raymond E. Ponder
Current U.S. Classification
:
292/343
;
16/86.00A
View patent at USPTO
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Drawings
Drawings
