Izon Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4334741 Melding maskExpiredSep 06, 79Jun 15, 82[G03B]
4263594 Electro-optical display designExpiredSep 06, 79Apr 21, 81[G08B]
4257041 Electro optical display deviceExpiredJun 19, 78Mar 17, 81[G06F]
4217041 Cassegrainian microfiche lens constructionExpiredSep 13, 76Aug 12, 80[G03B]
4208363 Method of making a plurality of adjacent light pipe elementsExpiredSep 13, 76Jun 17, 80[B29D, G02B]

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