COMAIR ROTRON, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2006/0171,804 Fluid moving deviceAbandonedJan 09, 06Aug 03, 06[F04D]
2005/0252,213 Condensation removal for use with a draft inducerAbandonedMay 17, 04Nov 17, 05[F01K, F28B, F01B]
2005/0048,427 Draft inducer performance controlAbandonedAug 23, 04Mar 03, 05[F23N]
2003/0234,627 Motor with dynamic current drawAbandonedMay 22, 03Dec 25, 03[H02K]
2002/0113,519 Stator with molded insulatorAbandonedFeb 19, 02Aug 22, 02[H02K]
2001/0030,516 Motor synchronization apparatusAbandonedDec 07, 00Oct 18, 01[H02K, H02P]
5983750 Rotating system with reduced transference of vibration and acoustics and method for reducing sameExpiredApr 23, 98Nov 16, 99[F16C, F16F]
5823068 Rotating system with reduced transference of vibration and acoustics and method for reducing sameExpiredAug 27, 96Oct 20, 98[G05G, F16F]
5547339 Turbulator for a fluid impelling deviceExpiredApr 11, 95Aug 20, 96[F01D]
4779330 Method for manufacturing motor with stator on printed circuit assemblyExpiredDec 10, 86Oct 25, 88[H02K]
4779069 Apparatus and method for making integral coaxial communication and rotor magnetsExpiredAug 07, 87Oct 18, 88[H01F]
4656553 Electronically programmable universal brushless DC fan with integral tracking and locked rotor protectionExpiredJan 21, 86Apr 07, 87[H02H]
4633110 Motor with stator on printed circuit assemblyExpiredMar 20, 85Dec 30, 86[H02K]
4618806 Ironless, brushless DC motor with wave-windingExpiredFeb 11, 85Oct 21, 86[H02K]
4564793 Brushless DC motor with improved startingExpiredSep 28, 83Jan 14, 86[H02K]
4563622 Simple brushless DC fan motorExpiredJan 10, 85Jan 07, 86[H02K, H02P]
4553075 Simple brushless DC fan motor with reversing fieldExpiredAug 04, 83Nov 12, 85[H02K]
4506218 Condition sensing arrangement for ac machinesExpiredJan 12, 81Mar 19, 85[G08B, G01R]
4494028 Integral coaxial commutation and rotor magnets and apparatus and method for making sameExpiredSep 30, 82Jan 15, 85[H02K]
4438362 Self-starting, direct current motor with permanent magnets of varied magnetic strengthExpiredAug 19, 82Mar 20, 84[H02K]

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