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http://www.google.ca/patents/US3792888?utm_source=gb-gplus-share
Patent US3792888 - ELECTRIC LOCK
ELECTRIC LOCK
Raymond V. Kambic et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3792888
Filing date
: 26 Jan 1973
Issue date
: 1 Feb 1974
Plain text
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