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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01/01/2013 | US8344855 Radio frequency identification interrogator and method of operating the same |
01/01/2013 | US8344854 Transient routing slips and inter-office envelopes |
01/01/2013 | US8344853 Secure RFID system and method |
12/27/2012 | US20120327111 Identifying and visualizing attributes of items based on attribute-based rfid tag proximity |
12/27/2012 | US20120326847 Secure tag management method and system |
12/27/2012 | US20120326845 Vehicle activity module |
12/27/2012 | US20120326843 Device control apparatus and device control method |
12/26/2012 | CN202634633U Industrial digital intercom alarm connection device |
12/26/2012 | CN202634632U Hand-held terminal of satellite communication and navigation intercom in Chinese area |
12/26/2012 | CN202634631U Audio and video emergency device |
12/26/2012 | CN202634630U Mining intrinsically safe intercom |
12/26/2012 | CN202634629U Face identification building intercommunication system with call forwarding function |
12/26/2012 | CN202634417U Interphone structure capable of eliminating sound crosstalk |
12/26/2012 | CN101998177B Rainproof doorway machine |
12/26/2012 | CN101453625B Visible building intercom system and host thereof |
12/25/2012 | US8340809 Intelligent shelving system and dividing element |
12/25/2012 | US8339266 System and method for determining RFID tag placement |
12/25/2012 | US8339245 Semiconductor device and IC label, IC tag, and IC card provided with the semiconductor device |
12/25/2012 | US8339244 Asset tag power optimization |
12/25/2012 | US8339243 System and method for positioning active RFID tag |
12/20/2012 | WO2012174068A1 Background object sensor |
12/19/2012 | CN202617300U Pluggable telephone card using proprietary definition |
12/19/2012 | CN202617274U Wireless visual intercom system of elevator |
12/19/2012 | CN202617180U Mobile phone with intercommunication function |
12/18/2012 | US8335006 Document management system |
12/18/2012 | US8334757 Controlling data access to and from an RFID device |
12/18/2012 | US8334756 RFID device |
12/18/2012 | US8334754 Tag communication device and tag communication method |
12/18/2012 | US8334753 Method and system for identifying and handling (tracing/locating/identifying to receive services) an owner and items in a secure/private area |
12/18/2012 | US8334752 Wireless tag, wireless tag communication system, wireless tag access device, method of detecting corresponding wireless tags and computer readable medium |
12/13/2012 | US20120313759 Tracking system for persons and/or objects |
12/12/2012 | CN202602712U Remote patient monitoring system based on Zigbee network |
12/12/2012 | CN202602638U Underground wireless communication system |
12/12/2012 | CN202602627U Interphone |
12/11/2012 | USRE43848 Communication method and apparatus improvements |
12/11/2012 | US8331931 System and method for cordless handset registration |
12/11/2012 | US8330602 Roll of tape with RFID tag, tag tape, and cartridge for including at least a RFID tag |
12/11/2012 | US8330581 IC tag, method of controlling the IC tag, and IC tag system |
12/11/2012 | US8330579 Radio-frequency auto-identification system for dialysis systems |
12/11/2012 | US8330578 Transponder device and method for providing a supply voltage |
12/06/2012 | WO2012166159A1 Implementation of on-off passive wireless surface acoustic wave sensor using coding and switching tecniques |
12/06/2012 | US20120306629 Device and method for checking the integrity of physical objects |
12/06/2012 | US20120306626 Article Storage Equipment and Method of Operating Same |
12/06/2012 | US20120306622 Proximity session mobility |
12/05/2012 | CN202587292U Multifunctional interphone |
12/05/2012 | CN202587291U Building talkback indoor device having chord music ringtone playing function |
12/05/2012 | CN202587290U Dual-frequency band interphone |
12/05/2012 | CN202587289U Two-key direct pressing host machine and building talk-back system |
12/05/2012 | CN202587288U Building intercom device |
12/05/2012 | CN202587287U Narrow-band integrated services digital network (N-ISDN) secondary confirmation extension set |
12/05/2012 | CN202587286U Digital interphone for intelligent flat-falling detecting and monitoring system |
12/05/2012 | CN202587285U Coal mine deep shaft well interphone auxiliary control device |
12/05/2012 | CN202587208U Visual building intercom system multi-doorphone controller |
12/05/2012 | CN202586958U Frequency modulation handheld station provided with automatic power control |
12/05/2012 | CN202586957U Wireless frequency modulation handheld station |
12/04/2012 | US8325041 Firearm visibility network |
12/04/2012 | US8325020 Unique identification of devices using color detection |
12/04/2012 | US8325019 Motion tracking techniques for RFID tags |
12/04/2012 | US8325018 Method and apparatus to reduce data lost on personal mobile devices |
12/04/2012 | US8325017 Time slot allocation apparatus and method for preventing collisions between time slots in TDMA-based RFID network |
12/04/2012 | US8325016 Radio frequency identification transponder |
12/04/2012 | US8325015 Conductive silicone wristband for wireless communications |
12/04/2012 | US8325014 RFID readers mitigating colored noise |
12/04/2012 | US8325013 RFID storage systems |
12/04/2012 | US8325012 Method for optimizing RFID deployment and RFID deployment optimizer of use thereof |
12/04/2012 | US8325011 Multiple radio frequency network node RFID tag |
11/29/2012 | US20120299707 User communication device based card presence monitoring and account status control |
11/29/2012 | US20120299706 Multi-antenna signaling scheme for low-powered or passive radio communications |
11/28/2012 | CN202565426U Interphone channel remote control changing device |
11/28/2012 | CN202565265U Medical calling system |
11/28/2012 | CN202558397U Build-in auxiliary engine circuit of intercom system of elevator |
11/28/2012 | CN102802092A Interphone capable of being positioned by satellite and realizing mutual tracking of tracks |
11/28/2012 | CN102802091A Methods, system and equipment for transmitting and processing broadcast information |
11/27/2012 | US8320570 Apparatus and method for generating secret key |
11/27/2012 | US8319646 Method and apparatus for tracking and monitoring containers |
11/27/2012 | US8319636 Method for locating items |
11/27/2012 | US8319612 Transponder detector for an RFID system generating a progression of detection signals |
11/27/2012 | US8319611 Radio frequency indentification tag |
11/27/2012 | US8319610 Radio-frequency identification (RFID) antenna, tags and communications systems using the same |
11/27/2012 | US8319609 Radio frequency identification transponder |
11/22/2012 | WO2012156988A2 Low power analog fm transceiver for bio-telemetry applications |
11/21/2012 | CN202551265U Talkback main unit for elevator |
11/21/2012 | CN202551264U Dual-band vehicle-mounted interphone with two operating systems |
11/21/2012 | CN202551263U Vehicle-mounted walkie talkie with separated operation panel and host |
11/21/2012 | CN202551054U Vehicle-mounted interphone with receiving frequency band of frequency modulation receiver |
11/21/2012 | CN202551026U Vehicle-mounted intercom capable of simultaneously receiving two frequency bands |
11/21/2012 | CN202551025U Encoding hand microphone device with loudspeaker |
11/21/2012 | CN202548936U Panel-changeable talkback outdoor unit |
11/21/2012 | CN102790926A Voice transmission method and system |
11/21/2012 | CN102790641A Method, system and device for transmitting data |
11/21/2012 | CN101662318B Method for controlling power in talkback communication between mobile terminals |
11/20/2012 | US8314687 Multi-protocol RFID system using bit-lock or step-lock synchronization |
11/20/2012 | US8314686 Radio controlled safety stop system for forklift trucks with RFID |
11/20/2012 | US8314685 Data detector for UHF RFID tags |
11/15/2012 | WO2012154345A1 Hierarchical fast collection procedure |
11/15/2012 | US20120286937 Visual RFID Tags and Interactive Visual RFID Networks |
11/15/2012 | US20120286934 Wireless sensor reader |
11/14/2012 | CN202535489U Novel disaster prevention alarm device |
11/14/2012 | CN202535488U Remote linkage intelligent building intercommunication system |
11/14/2012 | CN202535351U Recording interphone |