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http://www.google.co.uk/patents/US2193348?utm_source=gb-gplus-share
Patent US2193348 - NOTEBOOK CONSTRUCTION
NOTEBOOK CONSTRUCTION
Frank Stanley Schade et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 2193348
Filing date
: 8 May 1939
Issue date
: 12 Mar 1940
Plain text
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