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http://www.google.com.au/patents/US1944553?utm_source=gb-gplus-share
Patent US1944553 - DOUCHE
DOUCHE
Emanuei M. Freund et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 1944553
Filing date
: 24 Jun 1929
Issue date
: 23 Jan 1934
Plain text
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