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http://www.google.co.uk/patents/US2788387?utm_source=gb-gplus-share
Patent US2788387 - SUBSCRIPTION TELEVISION SYSTEM
SUBSCRIPTION TELEVISION SYSTEM
Walter S. Druz et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 2788387
Filing date
: 2 Oct 1951
Issue date
: 9 Apr 1957
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