| Patents for G08B 3 - Audible signalling systems; Audible personal calling systems (6,083) |
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| 11/07/1989 | US4879759 Holding structure for a paging receiver having extra functions |
| 11/07/1989 | US4879758 Communication receiver system having a decoder operating at variable frequencies |
| 11/02/1989 | EP0339861A2 Paging apparatus with improved message display function |
| 11/01/1989 | CN2047047U Speech number reporter |
| 11/01/1989 | CN2047046U Multifuncition automatic calling instrument |
| 10/31/1989 | US4878051 Paging system with commands for changing functionality of a paging receiver |
| 10/26/1989 | DE3812144A1 Circuit arrangement for emitting acoustic alarm signals for alarm signalling systems |
| 10/24/1989 | US4876538 Paging system sublocal switch |
| 10/19/1989 | WO1989010044A1 Paging system with interleaved acknowledge back capability |
| 10/18/1989 | EP0337795A2 A paging apparatus without a power switch |
| 10/18/1989 | EP0337693A2 Radio communication apparatus capable of generating an audible tone controlled by a count of reception of a call signal |
| 10/17/1989 | CA1262385A1 Pager watch system utilizing time slot communication |
| 10/11/1989 | CN2045865U Multi-functional electronic night duty unit |
| 10/10/1989 | US4873520 Paging receiver for storing digitized voice messages |
| 10/10/1989 | US4873519 Paging receiver having independent memory areas for common and individual addresses |
| 10/03/1989 | US4872005 Paging receiver capable of reminding a user of an important message event |
| 10/03/1989 | US4871991 Horn for an automotive vehicle |
| 09/27/1989 | EP0203140B1 A method and apparatus in radio reception for avoiding storing a message more than once |
| 09/27/1989 | EP0203139B1 Method and receiver for receiving messages sent by radio |
| 09/26/1989 | US4870403 Paging receiver with a capability of receiving or inhibiting message data |
| 09/26/1989 | US4870402 Multilingual paging system |
| 09/26/1989 | CA1260636A1 Watch pager system and communication protocol |
| 09/19/1989 | US4868860 Paging system for entering pages by local telephone call |
| 09/19/1989 | US4868561 Method of reprogramming an alert pattern |
| 09/19/1989 | US4868560 Voice paging system providing deferred paging capability |
| 09/19/1989 | US4868558 Paging system lata switch |
| 09/19/1989 | US4868540 Programmable doorbell control |
| 09/12/1989 | CA1259377A1 Selective paging receiver with message display |
| 09/05/1989 | US4864301 Variable speed transmission recording and retrieval of data |
| 09/05/1989 | US4864275 Solenoid operated doorbell |
| 08/30/1989 | EP0330514A2 Battery powered radio devices having a battery saving function |
| 08/24/1989 | WO1989007873A1 Paging system for entering pages by local telephone call |
| 08/24/1989 | WO1989007811A1 Paging system lata switch |
| 08/24/1989 | WO1989007810A1 Paging system sublocal switch |
| 08/24/1989 | WO1989007809A1 Paging system with dynamically programmable reception frequencies |
| 08/24/1989 | WO1989007808A1 Paging system with commands for changing functionality of a paging receiver |
| 08/22/1989 | US4860005 Communication receiver with automatic turn on/off |
| 08/22/1989 | CA1258662A1 Holder for portable communication unit |
| 08/09/1989 | EP0252939A4 Paging receiver with lpc speech synthesizer. |
| 08/08/1989 | US4855731 Pager receiver capable of avoiding an unpleasing interruption of a displayed message |
| 08/08/1989 | CA1258306A1 Doorbell activating device for pets |
| 07/25/1989 | US4851829 Paging receiver with alert indicating status of memory |
| 07/25/1989 | US4851820 Paging device having a switch actuated signal strength detector |
| 07/13/1989 | WO1989006478A1 Paging receiver capable of reminding a user of an important message event |
| 07/13/1989 | WO1989006477A1 Communication receiver with automatic turn on/off |
| 07/13/1989 | WO1989006474A1 Pager having time controlled functions |
| 07/13/1989 | WO1989006410A1 Acknowledge back pager with apparatus for controlling transmit frequency |
| 07/13/1989 | WO1989006409A1 Acknowledge back pager with frequency control apparatus |
| 07/13/1989 | WO1989006408A1 Combined radio pager/timepiece apparatus with receiver desensitization protection |
| 07/13/1989 | WO1989006407A1 Code division multiplexed acknowledge back paging system |
| 07/05/1989 | CN2040655U Door bell |
| 07/04/1989 | US4845491 Pager based information system |
| 07/04/1989 | US4845485 Combined radio pager/timepiece apparatus with receiver desensitization protection |
| 07/04/1989 | US4845470 Tamper evident closure apparatus |
| 06/28/1989 | EP0321698A2 Paging system with acknowledgement |
| 06/27/1989 | CA1256506A1 Method and apparatus in radio reception for avoiding storing a message more than once |
| 06/21/1989 | CN2039866U Multi-function audiovisual system for entertaining guest in room |
| 06/13/1989 | US4839628 Paging receiver having selectively protected regions of memory |
| 06/07/1989 | EP0319099A1 Paging system with paging receivers controlled depending on location |
| 06/07/1989 | CN2039050U Multifunctional safety door bell |
| 05/31/1989 | CN2038650U Electronic radio set with alarm unit |
| 05/24/1989 | EP0317230A2 Paging receiver with a message selecting circuit |
| 05/24/1989 | CN2038257U Multi-function electronic warner |
| 05/23/1989 | US4833452 Safety device and method of establishing group communication |
| 05/18/1989 | WO1989004579A1 Paging receiver for storing digitized voice messages |
| 05/18/1989 | WO1989004527A1 Improved paging device |
| 05/16/1989 | CA1254288A1 Electronic circuits for driving bells or electromagnetic devices |
| 05/10/1989 | CN2037486U Meteorological warning receiver |
| 05/09/1989 | US4829466 Paging device with modifiable operational characteristics |
| 05/09/1989 | US4828153 Detachable belt clip assembly |
| 05/05/1989 | WO1989004025A1 Paging receiver with programmable areas of reception |
| 05/02/1989 | US4827458 Sound surge detector for alerting headphone users |
| 05/02/1989 | US4825800 Marine horn installation |
| 04/18/1989 | US4823123 Decomposition of blowing agent, releasing gas |
| 04/18/1989 | US4823112 For a door or windowT?????h)??????????0*0*0*0?0????T |
| 04/05/1989 | CN2035251U Alarming fire-extinguishing device for leakage of liquefied petroleum gas stove |
| 03/22/1989 | CN2034721U 电子自动呼救药盒 Electronic automatic SOS kit |
| 03/22/1989 | CN2034444U Multifunctional calling first-aid box |
| 03/07/1989 | US4811379 Speak back paging system |
| 03/07/1989 | US4810997 Small sound generating device |
| 03/07/1989 | US4810996 Portable alert alarmT?????h)??????????0*0*0*0?0????T |
| 02/21/1989 | US4806911 Key-ring-mountable alarm device |
| 02/21/1989 | US4806909 Simulated static noise generator |
| 02/21/1989 | US4806906 Data terminal |
| 02/14/1989 | US4804955 Radio pager having a light-emitting diode for providing visual alarm and signal transmission |
| 02/14/1989 | US4804954 Battery saving method for portable communications receivers |
| 02/09/1989 | WO1989001264A1 Analog/digital data storage system |
| 02/07/1989 | US4803487 Portable communications receiver with separate information presentation means |
| 02/01/1989 | EP0301871A2 Selectively called receiver |
| 01/31/1989 | US4802241 Pager and adjustable clip |
| 01/31/1989 | US4801929 Container having audible closure removal signalling |
| 01/31/1989 | CA1249635A1 Pager with display |
| 01/18/1989 | CN1030491A Improvements in or relating to chinese character displays |
| 01/11/1989 | EP0298575A2 Paging receiver with power supply distributor |
| 01/10/1989 | US4796503 Amplification circuit for electronic tone generator |
| 01/04/1989 | EP0297368A2 Digitized stored voice paging receiver |
| 01/04/1989 | EP0297367A2 Digitized stored voice paging receiver having a single input user control |
| 01/04/1989 | EP0297366A2 Prioritization of stored messages in a digital voice paging receiver |
| 01/03/1989 | US4796024 Selective calling receiver with automatic memory storage and turn-on indication |
| 01/03/1989 | CA1248183A1 Pager receiver capable of avoiding an unpleasing interruption of a displayed message |