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www.google.cahttp://www.google.ca/patents/US1722678?utm_source=gb-gplus-sharePatent US1722678 - PETERSON Patent US1722678 - PETERSON

Patent US1722678 - PETERSON

PETERSON

J. J. PETERSON et al

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 1722678
Filing date: 16 Apr 1928
Issue date: 30 Jul 1929

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