Sodeco-Saia, AG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4683409 Stabilizing arrangement for a stepping motorExpiredApr 21, 86Jul 28, 87[H02P]
4673855 Restraining the instability of a stepper motorExpiredFeb 28, 85Jun 16, 87[H02P]
4672282 Stepping motor control circuitExpiredApr 05, 85Jun 09, 87[H02P]
4612435 Roller counting device with zero reset mechanismExpiredJan 17, 85Sep 16, 86[G06C]
4544815 Multiple key switchExpiredJan 17, 84Oct 01, 85[H01H]
4532444 Rotational restriction lock for the rotor of a synchronous motorExpiredMay 04, 83Jul 30, 85[H02K]
4504084 Documents containing information invisible to the naked eyeExpiredJan 30, 84Mar 12, 85[B42D]
4499346 Snap action miniature switchExpiredJul 19, 83Feb 12, 85[H01H]
4477744 Permanent magnet rotor with gaps between the magnet and the hubExpiredAug 29, 83Oct 16, 84[H02K]
4255681 Miniature synchronous electric motorExpiredMar 26, 79Mar 10, 81[H02K]
4185214 Miniature synchronous motor with vibration damperExpiredAug 21, 78Jan 22, 80[H02K]

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