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http://www.google.co.uk/patents/US3030015?utm_source=gb-gplus-share
Patent US3030015 - WIESLANDER ETAL
WIESLANDER ETAL
F. W. WIESLANDER et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3030015
Filing date
: 26 Oct 1960
Issue date
: 17 Apr 1962
Plain text
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