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http://www.google.com.au/patents/US2460546?utm_source=gb-gplus-share
Patent US2460546 - METHOD AND APPARATUS FOB TREATING
METHOD AND APPARATUS FOB TREATING
N. N. STEPHANOFF et al
Overview
Abstract
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Description
Claims
Patent number
: 2460546
Filing date
: 1 Oct 1942
Issue date
: 1 Feb 1949
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