Perkins Engines Group Limited

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2007/0150,254 Simulation engine for a performance validation systemAbandonedOct 31, 06Jun 28, 07[G06F]
5076239 Fuel injection systemExpiredDec 15, 88Dec 31, 91[F02M]
4901700 Clamp for an internal combustion engine fuel injectorExpiredJul 19, 84Feb 20, 90[F02M, F16B]
4793302 Engine cooling systemExpiredApr 20, 87Dec 27, 88[F01M]
4761886 Dipstick for measuring oil or fluid levelsExpiredMar 31, 87Aug 09, 88[G01F]
4647780 Apparatus for measuring smoke densityExpiredOct 09, 84Mar 03, 87[G01N]
4616612 Internal combustion engine pistonExpiredFeb 11, 85Oct 14, 86[F02B]
4608950 Machine coverExpiredDec 07, 84Sep 02, 86[F01M]
4479463 Engine sumpExpiredFeb 17, 83Oct 30, 84[F01M]
D259489 Combined induction and exhaust manifold for an internal combustion engineExpiredJun 19, 78Jun 09, 81[D150]
4214443 Marine engine manifoldExpiredSep 01, 78Jul 29, 80[F01N]
4187678 Marine engine manifoldExpiredMar 31, 77Feb 12, 80[F01N]

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