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http://www.google.ca/patents/US3519871?utm_source=gb-gplus-share
Patent US3519871 - FIG. OOOOOF
FIG. OOOOOF
Hikokuro Kanie et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3519871
Filing date
: 27 Oct 1966
Issue date
: 7 Jul 1970
Plain text
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