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www.google.comhttp://www.google.com/patents/US2242396?utm_source=gb-gplus-sharePatent US2242396 - K JOHANSEN Patent US2242396 - K JOHANSEN

Patent US2242396 - K JOHANSEN

K JOHANSEN

Einar K. Johansen et al

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 2242396
Filing date: Mar 5, 1940
Issue date: May 20, 1941

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