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www.google.comhttp://www.google.com/patents/US2920132?utm_source=gb-gplus-sharePatent US2920132 - STERN Patent US2920132 - STERN

Patent US2920132 - STERN

STERN

Inventor: Arthur P. Stern

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 2920132
Filing date: Dec 29, 1953
Issue date: Jan 5, 1960

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