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www.google.cahttp://www.google.ca/patents/US3921047?utm_source=gb-gplus-sharePatent US3921047 - DESCRIPTIOROF THE PREFERRED

Patent US3921047 - DESCRIPTIOROF THE PREFERRED

DESCRIPTIOROF THE PREFERRED

Alan W. Carter et al

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 3921047
Filing date: 2 Apr 1973
Issue date: 1 Apr 1975

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