ELAMEX, S.A. DE C.V.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5290639 Battery socket for smoke detectorExpiredJun 04, 92Mar 01, 94[H01M]
5077547 Non contact programming for transmitter moduleExpiredMar 06, 90Dec 31, 91[G08B]
D307874 Door/window intrusion detector transmitterExpiredNov 16, 87May 15, 90[]
D306704 Transmitter moduleExpiredNov 16, 87Mar 20, 90[]
D306705 Central monitorExpiredNov 16, 87Mar 20, 90[]
4821027 Voice interactive security systemExpiredNov 16, 87Apr 11, 89[G08B, H04Q]
4803473 Transmitter coverExpiredJan 20, 88Feb 07, 89[G08B]
4801924 Transmitter programmer connect systemExpiredJan 20, 88Jan 31, 89[G08B]
D297317 Gas detectorExpiredAug 06, 86Aug 23, 88[]
D297318 Smoke detector chamberExpiredAug 06, 86Aug 23, 88[]
D297219 Smoke detector cover with lightExpiredAug 06, 86Aug 16, 88[]
D297222 Smoke and fire alarmExpiredDec 20, 85Aug 16, 88[]
D297270 Smoke detector baseExpiredAug 06, 86Aug 16, 88[]
4581606 Central monitor for home security systemExpiredAug 30, 82Apr 08, 86[F25D]
D277558 Smoke detecting photoelectric sensing chamberExpiredJan 24, 83Feb 12, 85[]
D271089 Smoke detector coverExpiredFeb 17, 81Oct 25, 83[D100]
4321466 Sensitivity test system for photoelectric smoke detector by changing light source intensityExpiredNov 26, 79Mar 23, 82[G01N]
D260078 Combined bottle and cupExpiredNov 13, 78Aug 04, 81[D090]
4245174 Dual ionization chamberExpiredApr 24, 78Jan 13, 81[H01J]
4238675 Optics for infrared intrusion detectorExpiredJun 14, 79Dec 09, 80[G01J]

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