| Patents for G08B 3 - Audible signalling systems; Audible personal calling systems (6,083) |
|---|
| 08/27/1991 | US5043718 Selective paging system and paging receiver therefor |
| 08/21/1991 | CA2010541A1 Door bell system |
| 08/14/1991 | CN2082611U Ultrasonic vision protector for reading or writing |
| 08/13/1991 | US5039985 Paging apparatus with improved message display function |
| 08/13/1991 | US5039984 Paging receiver with programmable areas of reception |
| 08/08/1991 | WO1991011866A1 Method for transferring messages in a one-way communication system |
| 08/06/1991 | CA1287379C Speak back paging system |
| 07/16/1991 | US5032835 Out of range indication for radio receivers |
| 07/10/1991 | EP0435964A1 Energy saving protocol for a communication system |
| 07/09/1991 | CA1285995C System for off-the-air reprogramming of communication receivers |
| 07/09/1991 | CA1285994C Acknowledge back pager with apparatus for controlling transmit frequency |
| 07/03/1991 | CN2080195U Radio remote control traffic multi-way language warning device |
| 06/27/1991 | WO1991009504A1 Multiple format signalling protocol for a selective call receiver |
| 06/26/1991 | EP0434231A2 Paging accessory for portable computing devices |
| 06/26/1991 | CN2079496U Visual protector for children |
| 06/19/1991 | CN2079330U Contact type multi-direction protective theft-proof alarming device |
| 06/13/1991 | WO1991008653A1 Selective call receiver theft protection device |
| 06/13/1991 | WO1991008619A1 On-site communication system having pager identification capability |
| 06/04/1991 | US5021794 Telephone-activated |
| 05/30/1991 | WO1991007855A1 Efficient message storage within a selective call receiver |
| 05/29/1991 | CN2078026U Vibrating waking-device of radio remote control by use of time control |
| 05/29/1991 | CN2077819U Electronic talking horn for automobile |
| 05/21/1991 | US5017910 Intermittent fault detection system |
| 05/21/1991 | US5016326 Belt clip |
| 05/07/1991 | US5014040 Personal locator transmitter |
| 05/07/1991 | US5014039 Door answering and intruder alert apparatus and method |
| 05/07/1991 | US5012757 Automatic horn warning signal apparatus for use on boats |
| 05/02/1991 | EP0424880A2 A communication system comprising a called receiver and a communication apparatus |
| 05/01/1991 | CN2076255U Alarm device for watching television nearby |
| 04/30/1991 | US5012235 Paging receiver with continuously tunable antenna and RF amplifier |
| 04/30/1991 | US5012234 User activated memory programming authorization in a selective call receiver |
| 04/30/1991 | US5012221 Emergency vehicle audible warning system and method |
| 04/30/1991 | US5012220 Solar powered paging device |
| 04/30/1991 | US5012219 Message reminder alert for selective call receiver |
| 04/30/1991 | CA1283708C Radio pager having local- and wide-area reception modes |
| 04/18/1991 | WO1990010987A3 Energy saving protocol for a communication system |
| 04/17/1991 | EP0422920A2 Sensitivity indicator for a radio receiver |
| 04/14/1991 | WO1991006186A1 Message reminder alert for selective call receiver |
| 04/10/1991 | EP0420843A1 Paging system with commands for changing functionality of a paging receiver |
| 04/10/1991 | CN1012324B Method of speech information bulletin and system used in factory |
| 04/04/1991 | WO1991004614A1 A non-contact pager programming system and a pager for use therewith |
| 04/04/1991 | WO1991004551A1 Programmable doorbell control |
| 04/02/1991 | US5005014 System and method for optimally transmitting acknowledge back responses |
| 04/02/1991 | US5005002 For personal use |
| 03/27/1991 | CN2073732U Correcting device of sitting position |
| 03/26/1991 | US5003576 Analog/digital voice storage cellular telephone |
| 03/20/1991 | EP0417388A2 Body vibrator |
| 03/20/1991 | CN2073559U Safety alarm device for gas ranges |
| 03/13/1991 | EP0416792A2 Access control devices and systems incorporating such devices |
| 03/13/1991 | EP0211849B1 Pager system and communication protocol |
| 02/27/1991 | EP0414142A2 Monitoring and controlling system and method of acquisition of random errors |
| 02/27/1991 | EP0413963A2 Radio communication apparatus for rapidly knowing whether the apparatus is within or out of a service area |
| 02/27/1991 | CN2072189U Multifunctional electric torch |
| 02/21/1991 | WO1991002434A1 Automatic message protection for selected addresses in a selective call receiver |
| 02/21/1991 | WO1991002433A1 Stored voice receiver having user controllable message retrieval |
| 02/20/1991 | EP0413369A1 A portable pager |
| 02/19/1991 | US4994797 Method and system for user controlled page disposition |
| 02/13/1991 | EP0412574A2 Antenna for watch pager system |
| 02/08/1991 | CA2021999A1 Audible circuit tracer |
| 02/05/1991 | US4991225 Slidable battery holder for simulated pager with concealed radio transmitter |
| 02/05/1991 | US4990892 Personnel locator system |
| 01/31/1991 | DE3924622A1 Antitheft alarm protecting car, building, etc. - generates spoken warning via loudspeaker before bell or siren is sounded |
| 01/23/1991 | EP0408557A1 Paging system lata switch |
| 01/23/1991 | CN2070023U Ac door bell with electronic music |
| 01/22/1991 | CA1279375C Battery casing for a paging receiver |
| 01/16/1991 | EP0408086A2 Watch pager system |
| 01/16/1991 | EP0408027A2 Radio communication apparatus in which a particular call can be surely informed to a possessor of the apparatus |
| 01/16/1991 | EP0346406A4 Paging receiver for storing digitized voice messages |
| 01/16/1991 | CN2069583U Safety device for pupil crossing street |
| 01/02/1991 | EP0404786A1 Paging system for entering pages by local telephone call |
| 01/01/1991 | US4982141 Driver circuit for piezoelectric transducer and electroluminescent lamp |
| 12/27/1990 | EP0404108A1 Control apparatus for a call reminder in a paging system |
| 12/27/1990 | CA1278345C Paging receivers |
| 12/19/1990 | EP0402358A1 Paging system sublocal switch |
| 12/18/1990 | US4978944 Paging receiver with dynamically programmable channel frequencies |
| 12/13/1990 | WO1990015511A1 Retransmission method and apparatus |
| 12/13/1990 | DE3920584C1 Location detector for set number of people or objects - uses wideband signal transmitting and receiving arrangement in star configuration within building or complex |
| 12/12/1990 | EP0402129A2 Location identification system |
| 12/12/1990 | EP0401223A1 Paging system with dynamically programmable reception frequencies |
| 12/12/1990 | CN2067143U Chidren's vision protector |
| 12/11/1990 | US4976214 Door harps |
| 12/05/1990 | CN2066730U Electronic sight protector |
| 12/04/1990 | US4975693 Programmable multi-address pager receiver and method of characterizing same |
| 11/29/1990 | WO1990014728A1 Beeper amplifier |
| 11/29/1990 | WO1990014646A1 User activated memory programming authorization in a selective call receiver |
| 11/28/1990 | EP0398934A1 Acknowledge back pager with frequency control apparatus. |
| 11/15/1990 | WO1990013983A1 Automatic time zone adjustment of portable receiver |
| 11/15/1990 | WO1990013951A1 Thin articulated pager |
| 11/13/1990 | US4970490 Motor bell alarm |
| 11/07/1990 | EP0395725A1 Pager having time controlled functions. |
| 11/07/1990 | CN2065351U Back-locked door bell |
| 11/01/1990 | WO1990013213A1 Radio pagers |
| 11/01/1990 | WO1990013189A1 Low battery indicator |
| 10/31/1990 | EP0394357A1 Acknowledge back pager with apparatus for controlling transmit frequency. |
| 10/30/1990 | USRE33417 Mobile paging call back system and related method |
| 10/24/1990 | EP0393794A1 Method for application dependent display of data on a screen of a paging system, and a paging system, suitable for use of the method |
| 10/24/1990 | EP0393793A1 In a paging system a method for transmission of a message and after receipt thereof display thereof, and a paging system suitable for use of this method |
| 10/23/1990 | US4965569 Digitized stored voice paging receiver |
| 10/17/1990 | EP0392631A1 Housing for a paging receiver |
| 10/15/1990 | WO1990013195A1 Analog/digital voice storage cellular telephone |