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www.google.com.auhttp://www.google.com.au/patents/US1224431?utm_source=gb-gplus-sharePatent US1224431 - JOHN VAN VOKST

Patent US1224431 - JOHN VAN VOKST

JOHN VAN VOKST

JOHN VAN VOKST et al

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 1224431
Filing date: 6 Mar 1818
Issue date: 1 May 1917

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