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www.google.com.auhttp://www.google.com.au/patents/US3798360?utm_source=gb-gplus-sharePatent US3798360 - KEY REGISTER

Patent US3798360 - KEY REGISTER

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Horst Feistel et al

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 3798360
Filing date: 30 Jun 1971
Issue date: 19 Mar 1974

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