Whistler Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6161606 Hurricane strut for garage doorsExpiredJul 28, 98Dec 19, 00[E05D]
5925996 Garage door operator motor secondary thermal overloadExpiredOct 10, 97Jul 20, 99[H02P, H02D]
5445207 Reinforced collapsible garage door assemblyExpiredNov 10, 93Aug 29, 95[E05D]
5379456 Multiplying saw phase shift envelope detectorExpiredFeb 05, 91Jan 03, 95[H04B]
5359322 Method and apparatus for interconnected electronic locksExpiredSep 28, 92Oct 25, 94[G06F]
5347267 Electronic lock reset system and methodExpiredSep 28, 92Sep 13, 94[E05B]
5285136 Continuously monitored supplemental obstruction detector for garage door operatorExpiredFeb 22, 93Feb 08, 94[E05F, H02H]
5252960 Secure keyless entry system for automatic garage door operatorExpiredAug 26, 91Oct 12, 93[H03K, H03M, G06F]
5131268 Brake assembly including torque monitorExpiredJul 06, 90Jul 21, 92[F16D]
5016227 Top mounted buoy signaling deviceExpiredAug 25, 89May 14, 91[H04B]
4903243 Marine transponder systemExpiredAug 04, 88Feb 20, 90[H04B]
4872082 Door operator safety feature requiring constant actuation to close doorExpiredApr 05, 88Oct 03, 89[H02P]
D299591 Radar detectorExpiredJan 27, 86Jan 31, 89[]
4593412 Integrated oscillator antenna for low power, low harmonic radiationExpiredMay 21, 84Jun 03, 86[H04B]
4315249 Data communication system for activating remote loadsExpiredApr 14, 80Feb 09, 82[H04Q]
4305060 Decoder circuitry for selectively activating loadsExpiredFeb 26, 79Dec 08, 81[H04Q]

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