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http://www.google.com.au/patents/US3648039?utm_source=gb-gplus-share
Patent US3648039 - OPTICAL CORRELATOR FOR AUTOMATIC STEREOPLOTTING APPARATUS
OPTICAL CORRELATOR FOR AUTOMATIC STEREOPLOTTING APPARATUS
Daniel C. Kowalski et al
Overview
Abstract
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Description
Claims
Patent number
: 3648039
Filing date
: 11 Jul 1969
Issue date
: 7 Mar 1972
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