M. U. Engineering & Manufacturing, Inc.

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4690370 Rhodium coated moldExpiredSep 29, 82Sep 01, 87[B29C]
4488776 Plastic lens cellExpiredSep 30, 82Dec 18, 84[G02B]
4434891 Disc packageExpiredMar 18, 83Mar 06, 84[G11B, B65D]
4258982 Lens cellExpiredMay 24, 79Mar 31, 81[G02B]
4240701 All plastic projection lens assembly with aspheric surfaceExpiredJun 12, 78Dec 23, 80[G02B]
4193668 Mirror construction and method for making the sameExpiredJun 28, 78Mar 18, 80[G02B]

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