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http://www.google.co.uk/patents/US3844636?utm_source=gb-gplus-share
Patent US3844636 - ELECTROCHROMIC MIRROR
ELECTROCHROMIC MIRROR
Donald Leonard Maricle et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3844636
Filing date
: 13 Dec 1972
Issue date
: 1974
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