Utility Products Co., Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5109455 Optic interface hybridExpiredAug 03, 90Apr 28, 92[G02B]
4945704 Concrete anchor and method of attaching elements to concrete slabsExpiredMay 03, 89Aug 07, 90[E04C]
4364451 Ladder lockExpiredDec 16, 77Dec 21, 82[E06C]
D256638 PhoneboothExpiredJan 12, 79Sep 02, 80[D250, D060]

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