Optical Systems International Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4846913 Method for making bifocal lensExpiredOct 23, 85Jul 11, 89[B29C]
4645317 Eyeglass lens modules and methodExpiredFeb 22, 83Feb 24, 87[G02C]
4577942 Laminated high correction eyeglass lensExpiredFeb 22, 83Mar 25, 86[G02C]
4573776 Biconvex aphakic prosthetic lensExpiredDec 12, 83Mar 04, 86[G02B, G02C]

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