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http://www.google.ca/patents/US1050672?utm_source=gb-gplus-share
Patent US1050672 - JAMES H
JAMES H
H. B. MACINTOSH et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 1050672
Filing date
: 2 Jun 1911
Issue date
: 14 Jan 1913
Plain text
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