REX-PT, 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Expired/Abandoned/Withdrawn Patents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
4909380 Low backline pressure chainExpiredJan 09, 85Mar 20, 90[B65G]
4865183 Wide chain conveyor sprocket driveExpiredOct 30, 87Sep 12, 89[B65G]
4858751 Wide chain conveyor assemblyExpiredMar 14, 88Aug 22, 89[B65G]
4840269 Apron type conveyorExpiredMar 28, 88Jun 20, 89[B65G]
4821869 Low backline pressure chain for use with transfer plateExpiredNov 23, 87Apr 18, 89[B65G]
4809846 Chain link for a product capturing chainExpiredOct 30, 86Mar 07, 89[B65G]
D299424 Chain linkExpiredJun 17, 85Jan 17, 89[]
D299425 Chain linkExpiredJun 17, 85Jan 17, 89[]
4765454 Conveyor chain for use with fingered transfer plateExpiredAug 12, 85Aug 23, 88[B62G]
4729754 Sealed bushing joint for chainExpiredOct 15, 86Mar 08, 88[F16G]
4714917 Apparatus for detecting cracks in a flexible couplingExpiredOct 10, 86Dec 22, 87[G08B]
4711605 Key apparatusExpiredMay 29, 86Dec 08, 87[F16D, F16H]
4690661 Torsional stress distribution flexible couplingExpiredAug 26, 85Sep 01, 87[F16D]
4688669 Elevator bucket for high speed operationExpiredFeb 19, 85Aug 25, 87[B65G]
4682687 Pintle chain including self-retaining pinExpiredFeb 01, 85Jul 28, 87[B65G]
4681215 Conveyor roller and bearing assembly with external supportExpiredDec 20, 85Jul 21, 87[B65G]
4664243 Conveyor roller and bearing assemblyExpiredMar 25, 85May 12, 87[B65G, H05F, F16C]
D289734 Conveyor chain linkExpiredJan 11, 85May 12, 87[]
D289606 Conveyor chain linkExpiredJan 11, 85May 05, 87[]
D289607 Conveyor chain linkExpiredJan 11, 85May 05, 87[]

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