SEITZ CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6568685 Dynamic rotating seal assemblyExpiredDec 18, 00May 27, 03[F16J, B01D]
5097999 Form feeding tractor utilizing a composite belt with metal pull pinsExpiredDec 11, 89Mar 24, 92[B65H]
4811730 CPR face mask and method of using sameExpiredJul 18, 88Mar 14, 89[A61M]
4805822 Tractor with belt tensioning mechanismExpiredDec 21, 87Feb 21, 89[B65H]
4638935 Paper feed tractor with belt tensioningExpiredSep 10, 82Jan 27, 87[B65H]
4469263 Paper feed tractor with compensating drive pulleyExpiredAug 11, 82Sep 04, 84[B65H, G03B]
4462531 Paper feed tractor with belt tensioningExpiredSep 10, 82Jul 31, 84[B65H, G03B]
4315585 Sheet-feed tractor with eccentric clamping deviceExpiredMar 10, 80Feb 16, 82[B65H]
4194660 Sheet feed tractorExpiredNov 06, 78Mar 25, 80[B63H]

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