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www.google.cahttp://www.google.ca/patents/US3680056?utm_source=gb-gplus-sharePatent US3680056 - CC CO CC CO

Patent US3680056 - CC CO CC CO

CC CO CC CO

Walter Joseph Kropfl et al

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 3680056
Filing date: 8 Oct 1970
Issue date: 2 Jul 1972

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