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http://www.google.com/patents/US3511929?utm_source=gb-gplus-share
Patent US3511929 - DAIIOANOO QOIVNV
DAIIOANOO QOIVNV
Francis F. Lee et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3511929
Filing date
: Feb 11, 1966
Issue date
: May 12, 1970
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