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http://www.google.com/patents/US972638?utm_source=gb-gplus-share
Patent US972638 - METAL-POLISH
METAL-POLISH
FREDERICK N. PEASE et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 972638
Filing date
: Dec 3, 1909
Issue date
: Oct 11, 1910
Plain text
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