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http://www.google.com/patents/US3408631?utm_source=gb-gplus-share
Patent US3408631 - RECORD SEARCH SYSTEM
RECORD SEARCH SYSTEM
J. R. EVANS et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3408631
Filing date
: Mar 28, 1966
Issue date
: Oct 29, 1968
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