| Patents for G08B 7 - Signalling systems according to more than one of groups; Personal calling systems according to more than one of groups (2,936) |
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| 04/15/1992 | CN1060364A Automatic prediction device for liquefied gas cylinder |
| 03/25/1992 | CN2100000U Automatic announce stop device for passenger train |
| 03/10/1992 | CA1297179C Alarm device |
| 01/15/1992 | EP0465643A1 Overhead warning device |
| 01/15/1992 | CN2092988U Multifunctional signal monitor for heavy illness ward |
| 01/02/1992 | EP0462982A1 Paging system with improved acknowledge-back capabilities. |
| 12/04/1991 | CN2090082U Multifunction siren |
| 10/09/1991 | EP0450426A1 Method for generating a signal to attract attention |
| 10/05/1991 | CA2039671A1 Method for generating an attention attracting signal |
| 09/11/1991 | CN2084366U Sight protector |
| 08/21/1991 | EP0442853A2 Self-contained apparatus for emergency lighting incorporating alarm systems for fire, gas and the like |
| 08/14/1991 | CN2082611U Ultrasonic vision protector for reading or writing |
| 08/08/1991 | WO1991011788A1 Overhead warning device |
| 08/01/1991 | DE4002095A1 Optical-acoustic alarm installation - leads to emergency exit whose direction is indicated by gradation of signal intensity or frequency from one transmitter to next |
| 07/10/1991 | CN2080611U Miner's lamp with sound and light alarm function for gas |
| 06/26/1991 | CN2079746U Light measuring alarm of protecting visual |
| 06/26/1991 | CN2079495U Myopia preventer with sound and light alarm |
| 06/01/1991 | CA2004385A1 Personal alert system |
| 05/29/1991 | CN2078027U Executing service device of electrical communication by use of infrared ray receiving |
| 05/28/1991 | US5019805 Smoke detector with strobed visual alarm and remote alarm coupling |
| 05/28/1991 | US5019798 Overhead warning device |
| 05/22/1991 | CN2077294U Automatic intravenous injector |
| 05/08/1991 | CN2076514U Internal magnetic alarm for tipping bucket of lorry |
| 04/17/1991 | CN2075079U Prevention and cure device for myopia |
| 04/04/1991 | WO1991004551A1 Programmable doorbell control |
| 04/02/1991 | US5005004 Light activated vehicle sensor with flashing light and pulsing sound alarm |
| 02/26/1991 | US4996517 Household alarm system |
| 02/22/1991 | WO1991003037A1 Selective call signalling system |
| 02/13/1991 | CN1049235A 语言报警记录系统 Language alarm logging system |
| 02/06/1991 | EP0233269B1 Surveillance installation |
| 01/30/1991 | EP0267267A4 Hospital signaling and communications system |
| 01/01/1991 | US4982141 Driver circuit for piezoelectric transducer and electroluminescent lamp |
| 12/13/1990 | DE3918874A1 Security signalling device with battery monitor and switch - provides danger warning and communication between overseer in direct visual contact and workers at construction site |
| 12/12/1990 | CN2067427U Sound and light synchro automatic alarm device |
| 12/12/1990 | CN2067144U Myopia prevention instrument |
| 12/05/1990 | EP0401038A1 Improvements in or relating to personnel safety arrangements |
| 12/01/1990 | CA2018125A1 Personnel safety arrangements |
| 11/21/1990 | CN1047154A Increasing temperature warning device |
| 10/30/1990 | US4967195 Hospital signaling and communications system |
| 10/30/1990 | US4967177 Audiovisual signaling device and method |
| 10/10/1990 | EP0391241A2 Signalling exchange |
| 09/26/1990 | EP0388756A2 Vehicle antitheft device with means for remotely indicating a break-in attempt |
| 09/26/1990 | CN2062877U 报警控制器 Alarm Controller |
| 09/20/1990 | WO1990010922A1 Paging system with improved acknowledge-back capabilities |
| 09/04/1990 | US4954813 Portable warning device |
| 08/22/1990 | CN2060909U Multi-function micro-alarm |
| 08/08/1990 | CN1044514A Alarm device for surrounding rock collapse |
| 07/31/1990 | CA1272266A1 Anti-theft product rack and method |
| 07/10/1990 | US4940963 Paging system with improved acknowledge-back capabilities |
| 06/19/1990 | US4935735 Selective call radio receiver silent alert mode entry system |
| 06/05/1990 | US4931780 Illuminated address identifier and alarm device |
| 05/29/1990 | US4929936 LED illuminated sign |
| 05/29/1990 | US4929927 Surveillance installation |
| 05/23/1990 | CN2057520U Slurry flow alarm |
| 04/18/1990 | CN2056264U Multifunctional acoustooptic alarm controller for harmful gas |
| 04/18/1990 | CN2056141U Multi-purpose integrated lamp and bell device with music on cycles |
| 03/07/1990 | CN2054183U Automatic anti-thief alarm society network |
| 02/27/1990 | US4904982 Visual and audible warning device |
| 02/06/1990 | CA1265597A1 Surveillance installation |
| 01/23/1990 | US4896144 Hand washing alert |
| 01/10/1990 | CN2050990U Tri-purpose valve for pressure measuring and alarming |
| 12/27/1989 | CN2050194U Electronic station-reporting unit |
| 12/27/1989 | CN2050193U Alarm for storage battery voltage being not normal |
| 12/05/1989 | US4884523 Vehicle warning system |
| 11/29/1989 | CN2048604U Motercycle accident warner |
| 11/14/1989 | US4881150 Housing and holder assembly for a portable communication apparatus |
| 11/08/1989 | CN2047419U Luminosity type assignment device between digital code posts |
| 11/01/1989 | CN2047050U Automatic alarm brake while driver tired |
| 11/01/1989 | CN2047049U Multifunction pocket alarm |
| 11/01/1989 | CN2047048U Multifunctional sensitive and safety informing instrument |
| 10/31/1989 | US4878236 Automatic emergency locator system and method |
| 10/25/1989 | CN2046653U Water or steam alarm |
| 10/04/1989 | CN2045515U Multifunction quiet prompting apparatus |
| 10/03/1989 | US4871996 Warning system for watercraft |
| 09/20/1989 | CN2044752U Multifunctional automatic alarm for guarding against thief |
| 09/13/1989 | CN2044363U Safety warner for household electric appliance |
| 09/06/1989 | CN2044048U Gas stove safety valve |
| 08/30/1989 | CN2043775U Multifunctional cupboard-type calling means |
| 08/23/1989 | CN2043394U Baby diaper-wetting or quilt-shedding annunciator |
| 08/16/1989 | CN2042981U Apparatus for guarding against theft with automatic alarm, recall, shoot function |
| 08/08/1989 | US4855723 Audio-visual alarm system with address display |
| 08/02/1989 | EP0187149B1 Fire sensing and suppression method and system responsive to optical radiation and mechanical wave energy |
| 07/26/1989 | CN2041796U Music warner for figidarium |
| 07/11/1989 | US4847589 Visual and auditory signaling system |
| 07/05/1989 | EP0323245A1 Apparatus for effecting instruction with speech and display |
| 06/20/1989 | US4841302 Transmitter detector for use in a moving vehicle |
| 06/13/1989 | US4839630 Emergency signal device |
| 06/07/1989 | EP0318710A1 Central station alarm |
| 05/17/1989 | CN2037718U Portable marine acoustooptical signal |
| 04/11/1989 | US4821026 Visual and audible alarm device |
| 04/05/1989 | CN2035512U Multi purpose warner |
| 03/29/1989 | CN2035118U Language point warner |
| 03/29/1989 | CN2035117U Flash light signal alarm |
| 03/21/1989 | CA1251542A1 Loading dock signal and control system |
| 03/15/1989 | CN1031770A Programming digital code type automatic radio robbery-defence alarm |
| 01/11/1989 | EP0298759A2 Housing and holder assembly for a portable communication apparatus |
| 01/03/1989 | US4796018 Exit guiding system |
| 12/20/1988 | US4792798 Remote control system for pull-cords |
| 11/24/1988 | DE3728785A1 Portable radio set for transmitting short written characters in emergencies, having a range covering Europe |
| 11/22/1988 | CA1245324A1 Fire/fault sensing using optical detector/pressure transducer combination |