| Patents for H04Q 5 - Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange (6,717) |
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| 02/20/2003 | US20030034880 Peripheral device exchanging data with one of higher-order devices by switching interfaces |
| 02/13/2003 | US20030033262 Line connection controller |
| 02/05/2003 | CN2534756Y Radio talkback controller |
| 01/22/2003 | CN1392736A Process for mass production of variable fasion decorative building interphone panel |
| 12/25/2002 | CN1387334A Personalized call method for mobile service user |
| 11/28/2002 | WO2002096136A1 An individualised custom-built transfering method for users of mobile services |
| 11/27/2002 | CN1381994A Method and device for setting up parameters of talkback set |
| 10/30/2002 | CN2519567Y Holding-free swtiching device for radio intercom |
| 10/30/2002 | CN2519566Y Wireless duplex intercom earphone |
| 10/30/2002 | CN2519541Y Express way vehicular security receiving-transmitting machine |
| 09/12/2002 | WO2002071342A1 Signal discriminator for wake-up of a low power transponder |
| 09/05/2002 | US20020124051 Marking and searching capabilities in multimedia documents within multimedia collaboration networks |
| 09/04/2002 | CN1367619A Multimedia wireless speech intercommunication teaching system |
| 08/28/2002 | CN2508502Y Recordable digital video intercom |
| 08/21/2002 | CN2507210Y Visible intercom and information publishing device used in storeyed building |
| 08/13/2002 | US6433671 Dual mode transmitter-receiver and decoder for RF transponder tags |
| 08/07/2002 | CN2504857Y Management machine for building talkback and information system |
| 08/07/2002 | CN2504856Y Entrance machine for building talkback and information system |
| 08/07/2002 | CN2504855Y Decoder for building talkback and information system |
| 07/30/2002 | US6427007 System and method for completing a call while at least one call is established using analog interface to telephone network |
| 07/17/2002 | CN2501258Y Radio frequency monitor with talkback function |
| 06/26/2002 | CN1086898C PHS terminal device and data collection system using the same |
| 06/25/2002 | US6411695 System and method for completing two calls using analog interface to telephone network |
| 06/12/2002 | CN1353550A Interphone system for entrance and its operating method |
| 06/06/2002 | US20020067819 System and method for completing two calls using analog interface to telephone network |
| 05/08/2002 | CN1348315A Video interphone and information releasing system for building |
| 05/01/2002 | CN2489529Y Intelligent information management display device for video intercom |
| 05/01/2002 | CN2489528Y Intelligent network intercom |
| 02/27/2002 | CN1080068C Digital transmitting means |
| 01/23/2002 | EP1174834A2 Device location and identification system |
| 01/17/2002 | CA2352427A1 Device location and identification system |
| 01/02/2002 | CN2469642Y Multi-media wireless speech voice intercom teaching unit |
| 12/26/2001 | CN2468243Y Sound control earphone transmitter unit apparatus |
| 11/22/2001 | US20010044826 Dedicated echo canceler for a workstation |
| 10/31/2001 | CN1320346A Mobile phone system and mobile phone terminal using a plurality of telephone numbers |
| 10/18/2001 | US20010030521 Cross-connect method and apparatus |
| 10/17/2001 | CN2455018Y Communicaltion positioning navigation handheld device |
| 09/12/2001 | CN2448024Y Hand-free indoor intercom |
| 09/12/2001 | CN2448023Y Intercom house guard |
| 09/05/2001 | CN2446735Y Circuit of walkie-talkie |
| 08/08/2001 | EP1121828A2 Mobile phone system and mobile phone terminal using a plurality of telephone numbers |
| 08/02/2001 | US20010010491 Signal discriminator for wake-up of a low power transponder |
| 07/24/2001 | US6265842 Cross-connect method and apparatus |
| 07/17/2001 | US6263063 System and method for provisioning an extra line on demand and for selectively connecting calls with a plurality of devices |
| 07/10/2001 | US6259353 Transponder communication device for the contactless communication with mobile transponders, including means for carrying out an operational test, and transponder constructed as an operational-test transponder |
| 06/20/2001 | CN2435891Y Intercom for use in building |
| 06/13/2001 | CN2434412Y Electronic visable speech antitheft door |
| 06/12/2001 | US6247133 Method for authenticating electronic documents on a computer network |
| 05/09/2001 | EP1098283A2 Passive signal discriminator for wake-up of low power transponder |
| 05/03/2001 | WO2000021306A3 Mobile phone system and mobile phone terminal using a plurality of telephone numbers |
| 05/02/2001 | CN2428930Y Direct power-supplying sound-controlled switch-on device for wireless intercom |
| 05/02/2001 | CN2428929Y Wireless intercom microphone switch |
| 04/11/2001 | CN2426661Y Intercom doorbell with electric control unlocking |
| 03/21/2001 | CN2424590Y Acoustic controlled automatic visible intercom door bell |
| 02/21/2001 | CN2420804Y Intercommunication telephone for alarm controller |
| 02/07/2001 | CN2418636Y Long-distance controller turntable in radio intercommunication device |
| 02/07/2001 | CN1283295A Transaction authentication for 1-way wireless financial messaging units |
| 01/17/2001 | CN2415564Y Automatic switching device for intercom door bell |
| 12/20/2000 | EP0815622A4 Cross-connect method and apparatus |
| 11/29/2000 | CN2408629Y Hand-held walkie-talkie with flashlight function |
| 11/22/2000 | CN2407537Y Voice controlling microphone for wireless intercom |
| 10/11/2000 | EP1042741A1 Transaction authentication for 1-way wireless financial messaging units |
| 10/11/2000 | CN2400986Y Wireless intercom for making friends |
| 09/12/2000 | US6118387 Counter |
| 09/05/2000 | US6115459 Telephone switching system for easily implementing modification of connection information and medium storing telephone system control program |
| 08/22/2000 | US6107910 Dual mode transmitter/receiver and decoder for RF transponder tags |
| 08/15/2000 | US6105006 Transaction authentication for 1-way wireless financial messaging units |
| 07/12/2000 | CN2387685Y Selective calling talkback doorbell |
| 06/28/2000 | CN2385489Y Coding theft-proof intercom for building |
| 06/20/2000 | US6078255 System for logging premises hazard inspections |
| 05/24/2000 | EP0715773B1 Cross-connect system |
| 04/19/2000 | CN2375047Y Door bell telephone |
| 04/13/2000 | WO2000021306A2 Mobile phone system and mobile phone terminal using a plurality of telephone numbers |
| 04/12/2000 | CN2373959Y Subscriber extention for intercommunication theft-proof door in storied building |
| 04/05/2000 | EP0990350A1 Method for authenticating electronic documents on a computer network |
| 03/08/2000 | CN2368237Y Intercommunication device for door bell |
| 02/29/2000 | US6031349 Cross-connect method and apparatus |
| 02/16/2000 | CN2364647Y Automatic switch of intercom for building |
| 02/02/2000 | CN1243394A Intelligent dwelling management system working separately in stories and coding method thereof |
| 01/26/2000 | CN1242550A Method of transferring status data, server computer, and service control point |
| 01/25/2000 | US6018801 Method for authenticating electronic documents on a computer network |
| 12/21/1999 | US6005488 User control interface architecture for automotive electronic systems |
| 11/24/1999 | CN1236508A Transponder communication device |
| 11/17/1999 | CN1046611C System and method to identify the terminating directory number at customer premises |
| 09/14/1999 | US5952934 Terminal ID automatic assigning system |
| 08/26/1999 | WO1999043167A1 Method for authenticating electronic documents on a computer network |
| 08/25/1999 | EP0937353A1 Routing in a multi-layer distributed network element |
| 08/18/1999 | EP0935890A2 Method for data transmission to slave exchanges |
| 08/11/1999 | EP0935211A2 Electronic indentification system with forward error correction system |
| 07/01/1999 | WO1999033031A1 Transaction authentication for 1-way wireless financial messaging units |
| 07/01/1999 | CA2314217A1 Transaction authentication for 1-way wireless financial messaging units |
| 06/23/1999 | CN1220810A Method for data transmission to slave exchanges |
| 06/09/1999 | EP0921452A1 User control interface architecture for automotive electronic systems |
| 06/09/1999 | EP0920740A2 Transponder communication device |
| 02/25/1999 | WO1998053557A3 Transponder communication device |
| 02/02/1999 | CA2021070C Universal isdn subscriber line module |
| 12/23/1998 | WO1998043445A3 Method for data transmission to slave exchanges |
| 11/26/1998 | WO1998053557A2 Transponder communication device |
| 11/12/1998 | WO1998051098A1 System and method for completing two calls using analog interface to telephone network |
| 10/01/1998 | WO1998043445A2 Method for data transmission to slave exchanges |