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http://www.google.ca/patents/US3279110?utm_source=gb-gplus-share
Patent US3279110 - PORTABLE WARNING DEVICE
PORTABLE WARNING DEVICE
Jhon Lelicofi et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3279110
Filing date
: 2 Aug 1965
Issue date
: 18 Oct 1966
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