CAMBRIAN CONSULTANTS INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4831315 Transducer positioning apparatus with multiple modes of motionExpiredMar 20, 87May 16, 89[G11B]
4751441 Transducer position control system for disk storage equipmentExpiredMay 31, 85Jun 14, 88[H02K, H02P, H01R]
4530019 Servo patternExpiredJun 04, 84Jul 16, 85[G11B]
4530020 Self-timed runout correction patternExpiredJun 06, 84Jul 16, 85[G11B]
4449155 Gimbal assembly for flying magnetic transducer headsExpiredNov 16, 81May 15, 84[G11B]
4427905 Combined linear motor and side mounted outboard carriageExpiredJun 16, 83Jan 24, 84[H02K]
4424543 Method and apparatus for recording transducer positioning informationExpiredNov 16, 81Jan 03, 84[G11B]
4419703 Disc cartridge loading mechanismExpiredNov 16, 81Dec 06, 83[G11B]
4384311 Method for cleaning the disc surface and the head support structure in a magnetic disc driveExpiredOct 13, 81May 17, 83[G11B]
4376294 Head loading and retraction apparatus for magnetic disc storage systemsExpiredNov 16, 81Mar 08, 83[G11B]
4371903 Emergency head retract system for magnetic disc drivesExpiredSep 28, 81Feb 01, 83[G11B]

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