| Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223) |
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| 02/25/1986 | CA1201232A1 Telephone apparatus |
| 02/25/1986 | CA1201231A1 Multiparty line adaptor with privacy feature |
| 02/25/1986 | CA1201193A1 Tricoupler for modular wiring systems |
| 02/19/1986 | EP0171678A1 Device for the production of a multifrequency signal |
| 02/18/1986 | US4571463 Method and system for automatically inserting at least one pause into means for memorizing a dialing sequence |
| 02/18/1986 | US4571462 Multiple use digital tone generator in telephone |
| 02/18/1986 | US4571460 Active impedance line feed circuit with improved ground fault protection |
| 02/18/1986 | US4571459 Telephone answering machine |
| 02/18/1986 | US4571458 Telephone answering system with additional message storage capabilities |
| 02/18/1986 | US4571457 Automatic telephone answering and recording apparatus |
| 02/18/1986 | CA1200942A1 Waveform clipping circuits |
| 02/18/1986 | CA1200941A1 Gain regulation circuit |
| 02/18/1986 | CA1200843A1 Cordfree communication instrument |
| 02/13/1986 | WO1986001059A1 Device for unlocking a telephone provided with a mute function |
| 02/12/1986 | EP0171071A2 Radio communication system comprising a portable unit carrying out a battery saving operation related to a scanning operation of a fixed unit |
| 02/11/1986 | US4570034 Phone line ring signal detection circuit |
| 02/05/1986 | EP0170272A2 Voice recording card |
| 02/04/1986 | US4568929 Liquid crystal displays for telephone sets and other telecommunications terminals |
| 02/04/1986 | US4568801 Telephone desk stand/wall mounting apparatus |
| 02/04/1986 | CA1200316A1 Multiple simultaneous tone decoder |
| 02/04/1986 | CA1200308A1 Directional microphone assembly |
| 01/29/1986 | EP0169792A1 Telephonic receiving unit compatible with a prosthetic device for the aurally handicapped |
| 01/28/1986 | US4567445 High input impedance low output impedance amplifier |
| 01/28/1986 | US4567332 Four-wire telephone system with self-test means |
| 01/28/1986 | US4567329 Line circuit for network junctor |
| 01/28/1986 | US4567326 Telephone apparatus for selective operation in a normal and repertory dial mode |
| 01/28/1986 | CA1200036A1 Partyline subscriber interface circuit |
| 01/28/1986 | CA1200030A1 Cordless key telephone system employing infrared transmission |
| 01/22/1986 | EP0169021A2 Solid state switch |
| 01/15/1986 | EP0168216A2 Telephone set structure having a member capable of being inserted in invertible position |
| 01/15/1986 | EP0168039A2 Circuit arrangement for connecting a voice-controlled auxiliary device assigned to a telephone set to a telephone line |
| 01/14/1986 | US4564939 Handsfree telephone |
| 01/14/1986 | US4564729 Telephone illumination circuit |
| 01/14/1986 | US4564726 Pulse/direct current transmitting circuit in a key telephone system |
| 01/14/1986 | US4564724 Terminal interface connecting terminal unit having central office line interface to key telephone system |
| 01/14/1986 | CA1199439A1 Telephone hookswitch flasher |
| 01/08/1986 | EP0167331A2 Signal transmission apparatus |
| 01/08/1986 | EP0167108A2 Telephone handset |
| 01/07/1986 | US4563548 Method and circuit for telephone dialing signal generation |
| 01/07/1986 | CA1199138A1 Telephone handset having close-talking microphone |
| 01/07/1986 | CA1199137A1 Telephone set with two position mounting with alternate seating of handset |
| 01/07/1986 | CA1199136A1 Telephone set base |
| 01/07/1986 | CA1199116A1 Sound-activated code-controlled detection system for telephones and the like |
| 01/02/1986 | EP0166393A2 Telephone interface system |
| 01/02/1986 | EP0166202A2 Method for the remote control of a telephone answering apparatus |
| 01/02/1986 | EP0166198A2 Telephone handset |
| 12/31/1985 | US4562307 Transmitter-receiver station having low power consumption for a two-way communication link |
| 12/31/1985 | CA1198845A1 Self-actuating telephone timer |
| 12/27/1985 | EP0165294A1 Portable telephone id code transfer system. |
| 12/24/1985 | US4560840 Digital handsfree telephone |
| 12/24/1985 | US4560838 Apparatus for integrating a plurality of audio systems |
| 12/24/1985 | US4560834 Current limiter circuit for battery feed in a telephone circuit |
| 12/24/1985 | US4560832 Telephone system |
| 12/24/1985 | US4560831 Mobile telephone mounting pedestal |
| 12/20/1985 | CN85102589A Electronic telephone calling system having key-button "dialling " with high speed pulse |
| 12/18/1985 | EP0165182A1 Molecular electronic device with coded plug-in modules |
| 12/18/1985 | EP0165132A1 Keyboard connection arrangement for a data processing terminal, in particular for telecommunication |
| 12/18/1985 | EP0165058A2 Communication systems with portable units |
| 12/18/1985 | EP0164718A2 Automatic telephone dialing apparatus |
| 12/18/1985 | EP0077360B1 Subscriber telephone set provided with protection devices against overvoltages |
| 12/17/1985 | US4558864 Handgrip exercising, computer game controller |
| 12/17/1985 | CA1198237A1 Integral cup and hookswitch actuator for a telephone set |
| 12/11/1985 | EP0164312A1 Method for the remote programming of at least one station code in a radio station, and radio station for the application of the method |
| 12/10/1985 | US4558185 Subscriber line interface circuit with complex impedance |
| 12/10/1985 | US4558183 Opto-coupler interfacing circuit |
| 12/10/1985 | US4558179 Message playback control system for telephone answering machine |
| 12/10/1985 | US4558178 Wireless telephone apparatus including both a telephone handset and a telephone headset |
| 12/03/1985 | US4556763 Simplified line switch for a telephone set |
| 12/03/1985 | US4556762 Universal adjustable telephone handset holder |
| 12/03/1985 | US4556761 Automatic telephone answering apparatus |
| 12/03/1985 | CA1197640A1 Equipment for wireless telephone transmission |
| 11/27/1985 | EP0162662A2 Communication systems |
| 11/27/1985 | EP0162474A2 A printed circuit board and a circuit assembly for a radio apparatus |
| 11/26/1985 | US4555600 Vandal-resistant shield for telephone keypad |
| 11/26/1985 | US4555597 Transient resistant key operated pulse generating calling device circuit |
| 11/26/1985 | US4554993 Inflight headset for civil aircraft |
| 11/21/1985 | EP0161735A2 Transmitter assembly for a telephone handset |
| 11/19/1985 | US4554410 System for maintenance and diagnosis of mobile telephone equipment |
| 11/19/1985 | CA1197031A1 Method and an equipment for transmission of telephone calls to a portable, wireless telephone set |
| 11/13/1985 | EP0160788A2 Apparatus and method for controlling a digital speech filing and retrieval system during playback mode |
| 11/12/1985 | US4553267 Infrared telephone extension modulation system |
| 11/12/1985 | US4552995 Portable cordless phone holder |
| 11/12/1985 | US4552419 Mini-desk |
| 11/06/1985 | EP0160472A2 Reprogrammable call forwarding device |
| 11/05/1985 | US4551582 Circuit for automatically releasing holding state of telephone system |
| 11/05/1985 | US4551581 Method and apparatus for sending a data message to a selected station during a silent interval between ringing |
| 10/29/1985 | US4550226 Subscriber's telephone circuit arranged to present constant impedance to a telephone line |
| 10/29/1985 | US4549776 Connecting member for connecting two communications terminal units |
| 10/29/1985 | CA1196083A1 Anti-side tone transmitter |
| 10/22/1985 | USRE32012 Spoken word controlled automatic dialer |
| 10/22/1985 | US4549129 Regulator circuit |
| 10/22/1985 | US4549046 Telephone answering system with remote control capabilities |
| 10/22/1985 | US4549045 Method to operate through a telephone line one automatic phone answering equipment specified among a plurality, and apparatus to carry it out |
| 10/22/1985 | CA1195761A1 Snap-together housing |
| 10/22/1985 | CA1195743A1 Armored telephone cord with a longitudinal strength member |
| 10/16/1985 | EP0158538A2 Method and circuit for generating a time varying signal |
| 10/16/1985 | EP0158294A2 Telephone answering apparatus |
| 10/09/1985 | EP0157381A2 Circuit arrangement for a voice-controlled hands free subset |
| 10/08/1985 | US4546490 Single frequency detection circuit |
| 10/08/1985 | US4546217 Telephone sanitary cover |