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www.google.comhttp://www.google.com/patents/US1810828?utm_source=gb-gplus-sharePatent US1810828 - METHOD OF CABBONIZINO COAL

Patent US1810828 - METHOD OF CABBONIZINO COAL

METHOD OF CABBONIZINO COAL

CHABLES HAYES et al

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 1810828
Filing date: May 16, 1927
Issue date: Jun 16, 1931

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