FICHT GMBH & CO. KG.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5131353 Crank loop frame for a crank loop drive of an internal combustion engineExpiredNov 27, 90Jul 21, 92[F02B]
5097811 Process for operating a two-stroke internal combustion engineExpiredOct 02, 90Mar 24, 92[F02M, F02B, F02D]
4966068 Split ceramic piston ring arrangement with nested biasing ringExpiredMar 28, 89Oct 30, 90[F16J]
4782801 Internal combustion motorExpiredNov 06, 86Nov 08, 88[F01L]
4751871 Multisectional piston with plural ceramic parts and rigidly connected piston rod for use in horizontally opposed piston internal combustion engineExpiredMar 19, 86Jun 21, 88[F16J]
4715336 Four-stroke internal combustion piston engineExpiredFeb 26, 86Dec 29, 87[F02B]
4712780 Hydropneumatic spring suspension deviceExpiredMar 14, 86Dec 15, 87[B60G]
4693492 Wheel suspension using an arc springExpiredApr 01, 86Sep 15, 87[B60G, F16F]
4589079 Evaluation circuit for the signals from an array of N photoconductors which are successively scanned in a fast rhythmExpiredApr 14, 83May 13, 86[G06G]
4512290 Crank guide assembly for internal combustion engines, in particular two-stroke internal combustion engines with facing cylindersExpiredMay 13, 83Apr 23, 85[F02B]
4491097 Crank guide assembly for an internal combustion engine with at least two facing cylindersExpiredMay 13, 83Jan 01, 85[F02B]
4373474 Scavenging arrangement for a two-stroke internal combustion piston engineExpiredDec 29, 80Feb 15, 83[F02B]

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