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www.google.com.auhttp://www.google.com.au/patents/US919359?utm_source=gb-gplus-sharePatent US919359 - JEFFREYS Patent US919359 - JEFFREYS

Patent US919359 - JEFFREYS

JEFFREYS

W. B. SAYERS et al

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 919359
Issue date: 27 Apr 1909

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