| Patents for H04B 5 - Near-field transmission systems, e.g. inductive loop type (17,859) |
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| 02/26/1985 | CA1183226A1 Apparatus for the contactless transmission of data or the like between two relatively rotating parts |
| 02/26/1985 | CA1183220A1 Radio frequency communication system utilizing radiating transmission lines |
| 02/19/1985 | US4500881 Inductively-coupled signalling system |
| 02/13/1985 | EP0133006A2 Safe operation proving of electronic circuits |
| 02/05/1985 | CA1182178A1 Pager with visible display indicating status of memory |
| 01/29/1985 | CA1181814A1 Signal message transmitting system |
| 01/23/1985 | EP0131917A2 Frequency multiplex multichannel audio signal transmission system with intensity-modulated infrared radiation, especially for reproducing sound recordings on film copies apart from the original language, simultaneously in various other languages |
| 01/23/1985 | EP0131828A1 Radio communication system for transmitting local information |
| 01/23/1985 | EP0131732A2 Inductive coupling system for the bi-directional transmission of digital data |
| 12/18/1984 | US4489330 Electromagnetic induction coil antenna |
| 12/11/1984 | US4488153 Device for wireless data transmission |
| 10/30/1984 | US4480204 Apparatus for the contactless and brushless transmission of measuring and control signals |
| 10/30/1984 | CA1177137A1 Facility for fail-safe data transmission between trackside equipment of a guideway and vehicles moving therealong |
| 10/23/1984 | US4479261 Battery saving circuit for paging receiver |
| 10/16/1984 | US4477808 Radio paging receiver having stored message protection means |
| 10/16/1984 | CA1176312A1 Tone detector circuit |
| 10/10/1984 | EP0120901A1 Signal reproduction apparatus |
| 10/09/1984 | US4476574 Radio frequency communication system utilizing radiating transmission lines |
| 09/11/1984 | US4471356 Signal message transmitting system for a succession of mobile units |
| 09/04/1984 | CA1173909A1 Coded information arrangement |
| 07/17/1984 | US4461033 Transceiver |
| 07/10/1984 | US4459590 System for storing information |
| 06/26/1984 | US4457019 System for separately receiving multiple station audio-tour signals |
| 06/26/1984 | US4456997 Facility for fail-safe data transmission between trackside equipment of a guideway and vehicles moving therealong |
| 06/13/1984 | EP0110506A1 Display pager having memory overflow indication and concurrent message display functions |
| 06/05/1984 | CA1168727A1 Theft detection apparatus using saturable magnetic targets |
| 05/08/1984 | US4447779 Apparatus and method for determination of a receiving device relative to a transmitting device utilizing a curl-free magnetic vector potential field |
| 05/08/1984 | CA1167111A1 Selective call receiver |
| 04/12/1984 | WO1984001479A1 Signal reproduction apparatus |
| 03/13/1984 | US4437095 Selective call receiver having timed power supply |
| 03/13/1984 | CA1163680A1 Selective calling receiver with decoder powered according to varying clock pulses |
| 02/28/1984 | US4434507 Free standing transmitting microphone |
| 02/21/1984 | USRE31524 Apparatus for the detection and processing of electric signals |
| 02/14/1984 | US4432098 Apparatus and method for transfer of information by means of a curl-free magnetic vector potential field |
| 01/31/1984 | US4429288 Apparatus and method for modulation of a curl-free magnetic vector potential field |
| 01/31/1984 | US4429280 Apparatus and method for demodulation of a modulated curl-free magnetic vector potential field |
| 01/24/1984 | US4428078 Wireless audio passenger entertainment system (WAPES) |
| 01/17/1984 | CA1160720A1 Efficient object identification system |
| 12/07/1983 | EP0095750A2 Battery saving circuit for a portable radio receiver |
| 11/16/1983 | EP0093762A1 Radio communication system |
| 11/02/1983 | EP0092773A2 Arrangement for transmitting inductive signals from a mobile station and for exploiting these signals in an exploitation station |
| 10/26/1983 | EP0092219A1 Battery saving circuit for paging receiver or the like |
| 10/25/1983 | US4412217 Pager with visible display indicating status of memory |
| 10/19/1983 | EP0091874A1 Method and device for wireless stereophonic transmission from a sound reproducing apparatus to loudspeakers |
| 10/19/1983 | EP0091695A2 Battery saver circuit for use with paging receiver |
| 10/19/1983 | EP0091691A2 Radio paging receiver operable on a word-scrolling basis |
| 10/18/1983 | US4411004 Inductively coupled sensing circuit and priority system |
| 09/20/1983 | US4405837 Tone detector circuit |
| 08/31/1983 | EP0087107A1 Adjustable equalizer |
| 08/31/1983 | EP0087052A2 Arrangement for the non-contacting and non-touching transmission of measuring and control signals |
| 07/07/1983 | WO1983002352A1 High speed link for rotating display |
| 07/06/1983 | EP0082905A1 Circuit for the processing, transmission and acoustic reproduction of digitalized tone frequency signals |
| 06/28/1983 | US4390877 Remote control systems for toy vehicles, and the like |
| 05/31/1983 | US4386280 Removable contactless transmission clamp assembly system |
| 05/26/1983 | WO1983001877A1 Radio communication system |
| 05/24/1983 | US4385398 Selective call communication receiver |
| 05/18/1983 | EP0079324A2 Wide band tunnel radio arrangement |
| 05/17/1983 | US4384361 Selective calling receiver |
| 05/17/1983 | US4384281 Theft detection apparatus using saturable magnetic targets |
| 04/14/1983 | WO1983001357A1 Pager with visible display indicating status of memory |
| 04/13/1983 | EP0076545A1 Transmitter for transmitting an FSK-modulated signal |
| 03/29/1983 | US4378602 Communication system with a limited communication area |
| 03/16/1983 | EP0073903A2 Arrangement for the contactless information transmission between bodies rotating relatively to one another |
| 03/01/1983 | US4375289 Apparatus for monitoring a boundary line |
| 01/25/1983 | US4370753 Battery saver for a tone coded signalling system |
| 01/18/1983 | CA1139845A1 Wireless transmitting and receiving device using an ear microphone |
| 12/07/1982 | US4363137 Wireless telemetry with magnetic induction field |
| 11/30/1982 | US4361733 Hard-of-hearing aid appliance |
| 10/12/1982 | US4354061 Sensing coil in hearing aid |
| 10/06/1982 | EP0061462A1 Multi-system portable paging device. |
| 10/05/1982 | CA1132913A1 Public address system |
| 09/28/1982 | US4352200 Wireless aircraft passenger audio entertainment system |
| 09/28/1982 | US4352091 Radio pager having optional annunciating means |
| 08/10/1982 | US4344184 Wireless microphone |
| 07/08/1982 | WO1982002304A1 Tone detector circuit |
| 07/07/1982 | EP0055639A1 System for transmitting information to a passive programmable tranducer for dynamic encoding |
| 06/09/1982 | EP0053599A1 Installation for the inductive transmission of signal telegrams between a stationary transmitter-receiver station and single conveying means |
| 06/08/1982 | US4334315 Wireless transmitting and receiving systems including ear microphones |
| 06/01/1982 | US4333072 Identification device |
| 04/28/1982 | EP0050523A2 Electromagnetic transmission using a curl-free magnetic vector potential field |
| 04/15/1982 | WO1982001268A1 Multi-system portable paging device having a microprocessor for providing in real time multiple scheme decoding and energy-saving routines |
| 03/31/1982 | EP0048245A1 System and method for identifying an article to which a label is attached |
| 02/23/1982 | CA1118865A1 Quasi-stationary noise cancellation system |
| 02/02/1982 | CA1117602A1 Portable telephone system |
| 01/26/1982 | US4313208 Methods and apparatus for transmitting electromagnetic radiation for illumination and communication |
| 01/19/1982 | US4312001 Device for the transmission of measured values |
| 10/27/1981 | US4297595 Signal regenerating circuit with improved input-output isolation |
| 10/01/1981 | WO1981002801A1 System and method for identifying an article to which a label is attached |
| 08/05/1981 | EP0032981A1 Domestic emergency calling system with remote release |
| 07/14/1981 | CA1105089A1 Method of and apparatus for transmitting clandestine radio signals |
| 07/08/1981 | EP0031322A1 High sensitivity magneto-inductance varying proportionally with the value of the magnetic field |
| 06/23/1981 | US4275269 Public address system |
| 05/26/1981 | US4270226 Remote control system |
| 05/05/1981 | CA1100412A1 Amplifier and sound reproduction system |
| 03/10/1981 | US4255812 Signal regenerating apparatus with DC compensation |
| 02/24/1981 | US4253192 Telemetric system |
| 02/04/1981 | EP0023289A1 Device for coupling a transmitter-receiver aerial mounted on a vehicle to a transmitter-receiver equipment |
| 01/22/1981 | WO1981000170A1 High sensitivity magneto-industance varying proportionally with the value of the magnetic field |
| 01/07/1981 | EP0021886A1 Interphone system for radio connections |
| 11/25/1980 | US4236086 Apparatus for the detection and processing of electric signals |