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http://www.google.com.au/patents/US2325659?utm_source=gb-gplus-share
Patent US2325659 - COMPOSITE METAL STOCK
COMPOSITE METAL STOCK
Thomas B. Chace et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 2325659
Filing date
: 30 Oct 1939
Issue date
: 3 Aug 1943
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