NMB (U.S.A.), INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0279,492 Fluid Dynamic Bearing MechanismABANAug 17, 04Nov 13, 08[G11B, F16C, H02K]
6194881 Switching power supply for lowered distribution system disturbanceExpiredMay 17, 99Feb 27, 01[G05F]
4607197 Linear and rotary actuatorExpiredFeb 11, 80Aug 19, 86[H02K]
4509839 Heat dissipator for semiconductor devicesExpiredJun 16, 83Apr 09, 85[H01L]
4480206 Motor having stationary shaft and method of assembling itExpiredMar 08, 82Oct 30, 84[H02K]
4438361 Stepper motor having rotor with limited axial movementExpiredFeb 24, 82Mar 20, 84[H02K]
4427911 Rotor for a stepper motor having a sheet metal support for the magnetExpiredJan 04, 82Jan 24, 84[H02K]
4355248 Stepper motorExpiredJul 21, 81Oct 19, 82[H02K]

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