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http://www.google.co.uk/patents/US1853564?utm_source=gb-gplus-share
Patent US1853564 - A COBPOBATION
A COBPOBATION
EDWABD N. JACOBI et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 1853564
Filing date
: 3 Apr 1930
Issue date
: 12 Apr 1932
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