Maag Gear-Wheel & Machine Company, Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5154553 Apparatus for chamfering and deburring the end edges of a toothed production gearExpiredJan 04, 90Oct 13, 92[B23F]
5031491 Tool deviceExpiredJun 04, 90Jul 16, 91[B23B]
5031741 Synchronous coupling with locking meansExpiredDec 12, 89Jul 16, 91[F16D]
5007774 Cutting or drawing toolExpiredSep 12, 90Apr 16, 91[B23D]
4955163 Method for production of involute gear tooth flanksExpiredJun 27, 88Sep 11, 90[B24B]
4929161 Air-cooled oil-free rotary-type compressorExpiredOct 21, 88May 29, 90[F04C]
4887489 Bowl-mill gearingExpiredDec 28, 87Dec 19, 89[F16H]
4856914 Thrust bearing arrangementExpiredDec 28, 87Aug 15, 89[F16C]
4720220 Tool for machining tooth flanks and method of finishing tooth flanksExpiredJan 16, 86Jan 19, 88[B23F]
4703261 Differential Hall-effect gear measure feelerExpiredDec 11, 84Oct 27, 87[H03K, G01B]
4606153 Method for controlling a grinding stroke in a gear tooth flank grinding machine operating on the indexing generating principleExpiredJun 26, 84Aug 19, 86[B24B]
4601111 Gear tooth test feelerExpiredMay 23, 85Jul 22, 86[G01B]
4571891 Apparatus for compensating for dressing tool wear during the dressing of grinding wheelsExpiredMar 18, 85Feb 25, 86[B24B]
4572442 Bowl-type grinding apparatusExpiredOct 24, 83Feb 25, 86[B02C]
4562909 Clutch device for marine vessel driveExpiredJan 23, 84Jan 07, 86[F16D]
4557639 Cutting tool for planing gear tooth flanksExpiredFeb 13, 84Dec 10, 85[B23F, B23C]
4555871 Method and apparatus for eliminating undulation errors on gear-tooth flanks in production gear-fabricating machinesExpiredOct 09, 84Dec 03, 85[B24B]
4551954 Method for controlling a grinding stroke in a gear tooth flank grinding machineExpiredMar 05, 84Nov 12, 85[B24B]
4552014 Tooth flank profile measuring apparatus containing a feeler for determining the surface roughness of a tooth flankExpiredDec 17, 84Nov 12, 85[G01B]
4552258 Clutch arrangement for power transmission, especially a reduction gear drive unit for marine vesselsExpiredJan 30, 84Nov 12, 85[F16D]

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