KARL SCHAEFF GMBH & CO. MASCHINENFABRIK

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5778569 Multi-purpose construction vehicle with at least two subframes and a self-aligning bearing between the subframesExpiredMar 28, 96Jul 14, 98[E02F]
5308220 Scoop-and-dump jack for shovel-loaderExpiredAug 27, 92May 03, 94[E02F]
5178238 Hydrostatic braking power converterExpiredNov 02, 90Jan 12, 93[B60T]
5129197 Adhesive bonded abrasive finishing toolExpiredJan 29, 90Jul 14, 92[B24D]
5054990 Excavator armExpiredDec 18, 89Oct 08, 91[E02F]
4602821 Combined shovel and rock breaking chisel for an excavatorExpiredSep 28, 84Jul 29, 86[E02F]
4571147 Shovel excavator with modified upper carriage designExpiredJul 13, 84Feb 18, 86[E02F]
4502709 Articulated loader with transversely displaceable counterweightExpiredMar 24, 82Mar 05, 85[B66F]
4299530 Vehicle with adjustable balance weightExpiredDec 17, 79Nov 10, 81[E02F]

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