Patents
Patents for G08B 3 - Audible signalling systems; Audible personal calling systems (6,083)
04/1998
04/22/1998EP0707732B1 A system for identifying object location
04/22/1998CN2279658Y Solar energy water level alarming & door ring two-purpose instrument
04/21/1998US5742238 System for communication between a central controller and items in a factory using infrared light
04/14/1998US5739759 Melody paging apparatus
04/08/1998CN1178184A Improved structure of carrying case for electronic equipment
04/01/1998EP0797817A4 Radio paging electrical load control system
04/01/1998CN2277544Y Burglar alarm using bleeper
03/1998
03/26/1998WO1998012677A1 Pager with voice and data messages
03/25/1998EP0831439A1 Selective calling wireless receiver unit
03/24/1998US5730348 Fastening for securing an apparatus to a belt
03/19/1998WO1998011666A1 A sounder control system
03/17/1998US5727290 Ergonomic attachment device for a portable electronic apparatus
03/11/1998CN2276183Y Driving safety distance alarm
03/10/1998US5726634 Smoke alarm with high and low pitched tones
03/04/1998CN1175169A Radio Pager with display device
03/03/1998US5724654 Housing for pager receiver having battery cover locking piece which exposes terminal for external access
03/03/1998US5724410 Two-way voice messaging terminal having a speech to text converter
02/1998
02/28/1998CA2213325A1 Apparatus and method for remotely controlling doorbell chimes from doorbell push button
02/25/1998CN1174481A Wireless selective call receiver with speech notice function in which power supply voltage is determined in loading state
02/18/1998CN1173788A Method of informing about lication of missing paging receiver and its owner's telephone number
02/04/1998EP0822528A1 Driving circuit for a piezoelectric buzzer
02/03/1998US5714944 Selective call receiver for receiving at least two kinds of transmitted information signals
02/03/1998US5714943 Radio data interface device
01/1998
01/28/1998EP0551496B1 Integrated safety monitoring and alarm system
01/22/1998DE19627262C1 Wrist-mounted acoustic signal generator for sports activity
01/21/1998CN2272753Y Transfusion alarm device
01/20/1998US5710576 Portable electronic apparatus having partial display function
01/20/1998US5709012 Belt clip integrated with structure to receive chain clip
01/13/1998US5708971 Two-way paging system and apparatus
01/07/1998EP0817142A1 Radio paging receiver with display
01/07/1998EP0815692A2 A two-way paging system and apparatus
01/06/1998US5705990 Multiple switch pad
12/1997
12/30/1997US5703945 Hands free cordless phone caddy
12/30/1997US5703572 Informing device for a radio receiver
12/24/1997CN1168608A Communication apparatus capable of announcing reception of call by melody sound composed by user
12/23/1997US5701588 Pictorial display apparatus for receivers for implementing the pictorial display
12/23/1997US5701227 Power surge protection assembly
12/17/1997CN2270997Y Traffic command electronic whistle
12/17/1997CN2270996Y Electronic door bell with theft-proof alarm function
12/16/1997US5697538 Holster for a portable communication device
12/16/1997CA2077344C Selective call receiver having anti-theft protection
12/11/1997WO1997047144A1 Method and apparatus for registration status indication in a roaming system
12/10/1997EP0811277A1 Joint demodulation using spatial maximum likelihood
12/10/1997CN1167409A Calling selection receiver with multiple calling alarm units
12/03/1997CN1166757A Radio selective calling receiver and calling method
12/02/1997US5694299 Selective call receiver having a cover with a hole for a key to protrude therethrough
11/1997
11/26/1997CN2268955Y Sensor for pushing, kicking and hitting
11/25/1997US5690262 Pager mounting system
11/18/1997US5689234 Integrated firefighter safety monitoring and alarm system
11/18/1997US5689229 Patient care and communication system
11/12/1997EP0806750A1 Audio communication system for a life safety network
11/12/1997EP0727128A4 Group message delivery in a time-division multiplexed paging system
11/12/1997CN2267489Y Multi-function personal protection arrangement
11/06/1997DE19713150A1 Portable alarm system e.g. for emergency alarm
11/05/1997CN2266755Y Multi-function quick isolating audible automatic alarmer
11/05/1997CN2266399Y Alarmer for bed-wetting
11/05/1997CN1164169A Radio paging receiver in which announcement of call is controlled in accordance with form of received signal
10/1997
10/29/1997EP0803849A1 Wireless selective call receiver operable in cover closing state
10/29/1997EP0803848A1 Radio selective calling receiver and calling method
10/23/1997WO1997039533A1 Multi-pole switch assembly
10/21/1997US5680112 Wireless audible indication system with battery status indicator
10/21/1997US5680102 Receiver for use in a wireless actuator system
10/21/1997US5678281 Clip assembly
10/15/1997EP0800653A1 Distance determination and alarm system
10/14/1997US5677679 Sound device for message decoder
10/07/1997US5675312 Piezoelectric warbler
10/07/1997US5675311 Frequency sweeping audio signal device
10/07/1997EP0560948A4 Method of personally addressed communication, information, guidance and quick processing of the procedures in the airports.
10/01/1997EP0797817A1 Radio paging electrical load control system
10/01/1997CN2263806Y Wireless anti-steal warner for safe
09/1997
09/24/1997CN2263376Y Radio telecontrol alarm and telecontroller
09/24/1997CN2263374Y AC double sound electronic door bell
09/24/1997CN2263373Y Whistle alarm for gas leakage
09/23/1997CA2109976C Casing for a miniature portable apparatus
09/23/1997CA2087838C Communication receiver providing displayed operating instructions
09/17/1997EP0795845A2 Communication apparatus capable of announcing reception of a call by a melody sound composed by a user
09/17/1997CN2262725Y Calling apparatus capable of identifying pedestrian direction
09/17/1997CN1159864A Multi-beam satellite-based messaging system
09/17/1997CN1159727A Calling device with low-voltage alarm device
09/11/1997CA2199648A1 Combined interior handbag personal alarm and light device
09/10/1997CN2262266Y Anti-theft anti-riot emergency alarm
09/10/1997CN2262265Y Multifunctional electronic door bell
09/09/1997US5664292 For supporting a device on a belt
09/05/1997CA2199113A1 Apparatus for remotely controlling auxiliary doorbell chime
09/03/1997CN2261197Y Memo flower bottle
09/02/1997US5663715 Synchronized paging system
08/1997
08/27/1997CN2261042Y Baby-protection device
08/27/1997CN1158061A Radio selective calling receiver capable of checking time period of stay outside coverage zone
08/26/1997US5661471 Emergency alert system for a protected region employing RF and non-RF signalling
08/26/1997US5661468 Radio paging electrical load control system and device
08/26/1997US5661460 Distance determination and alarm system
08/20/1997CN2260346Y Portable alarming device
08/20/1997CN1157537A Radio selective calling receiver
08/14/1997WO1997029462A1 Door bell for pets
08/13/1997CN2259581Y Controllable temperature water heater alarmed by electronic sound
08/12/1997US5657210 Radio pager having a protection lid
08/12/1997US5656779 Apparatus and method for producing structural and acoustic vibrations
08/06/1997EP0530441B1 Warning timer for users of interactive systems
08/06/1997CN1035585C Selective call receiver holster with integral display impact protection
07/1997
07/30/1997EP0786144A1 Multi-beam satellite-based messaging system
1 ... 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 ... 61