| Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223) |
|---|
| 08/30/1989 | EP0330364A2 Modular microphone assembly |
| 08/30/1989 | EP0216806B1 Circuit device used as an interface between a computer and an accessory device |
| 08/30/1989 | CN2043810U Bactericidal film of earphone |
| 08/29/1989 | US4862509 Portable recording system for telephone conversations |
| 08/29/1989 | US4862500 Telephone jack lock-out plug |
| 08/29/1989 | US4862499 Deformable membrane keypad assembly for public telephones |
| 08/29/1989 | US4862498 Method and apparatus for automatically selecting system commands for display |
| 08/29/1989 | US4862497 Hybrid alphanumeric telephone directory |
| 08/29/1989 | US4862494 Anti-fraud device for use with a coin operated telephone instrument |
| 08/29/1989 | CA1258928A1 Display telephone with transducer |
| 08/29/1989 | CA1258908A1 Simple data input apparatus |
| 08/24/1989 | WO1989007867A1 Wireless communication equipment and method of controlling the same |
| 08/23/1989 | EP0329399A2 Small-sized equipment with a liquid crystal display |
| 08/23/1989 | EP0328836A2 Pseudo-passive universal communicator system |
| 08/23/1989 | CN2043436U Electronic telephone anti-interference equipment |
| 08/22/1989 | US4860368 Acoustic transducers with improved frequency response |
| 08/22/1989 | US4860349 Telephone memory controller arrangement |
| 08/22/1989 | US4860347 Phone screen security system |
| 08/22/1989 | US4860342 Computer-telephone interface method and apparatus |
| 08/22/1989 | US4860340 DTMF signal discriminating circuit |
| 08/22/1989 | US4860339 Programmable telephone/dictation terminal and method of operating same |
| 08/22/1989 | US4860338 Multiline telephone answering system and interface therefor |
| 08/22/1989 | US4860337 Rapid processing of immediately successive arrival signals in a base station of a radio communication network |
| 08/22/1989 | US4860335 Method for notifying of a call arrival |
| 08/22/1989 | US4860024 Antenna for a portable radiotelephone |
| 08/17/1989 | DE3803357A1 Electric device |
| 08/16/1989 | EP0328462A1 Integrated circuit and remotely powered telephone set using it |
| 08/16/1989 | CN2043031U Auto dialling device for telephone |
| 08/16/1989 | CN2043030U High tension isolating protector with ac/dc signal transmission function |
| 08/16/1989 | CN2043029U Telephone set capable of using for acoustic coupling apparatus |
| 08/15/1989 | US4858213 Display for modular dictation/transcription system |
| 08/15/1989 | US4856214 Information clip-it |
| 08/10/1989 | WO1989007366A1 Circuit arrangement with adjustable active and/or passive components |
| 08/10/1989 | WO1989007326A2 Telephone junction box and switch therefor |
| 08/10/1989 | DE3802316A1 Microphone capsule for telephone sets |
| 08/09/1989 | EP0326734A2 Apparatus for anchoring a telephone handset to a telephone housing |
| 08/09/1989 | CN2042645U Simple telephone recording and picking up device |
| 08/09/1989 | CN1034649A Hook arrangement |
| 08/08/1989 | US4856083 Method of connecting a cordless telephone by radio |
| 08/08/1989 | US4856066 Speech communication system and method |
| 08/08/1989 | US4856058 Office line interface circuits |
| 08/08/1989 | US4856057 Apparatus in a loudspeaking telephone set for supplying power to an amplifier connected to the loudspeaker |
| 08/08/1989 | US4856056 Apparatus for timely controlling the sound characteristic of a signaling means of a voice communication device |
| 08/08/1989 | US4856053 Telephone terminal equipment having means for preventing malicious and nuisance transmission |
| 08/08/1989 | US4856052 Apparatus having a dial calling function and operable to identify picture image signals not yet transmitted to a called selected destination party |
| 08/08/1989 | US4856051 Automatic telephone answering apparatus |
| 08/08/1989 | US4856049 Single line compatible fax system |
| 08/08/1989 | US4856046 Remote public telephone link |
| 08/08/1989 | US4856045 Display terminal for a videophone |
| 08/03/1989 | DE3844425A1 Facsimile device responding to different start signals |
| 08/03/1989 | DE3802329A1 Circuit arrangement for the interface to connect a telephone set to a subscriber connection line |
| 08/03/1989 | DE3801841A1 Circuit arrangement for dial keypads in communications terminals |
| 08/01/1989 | US4853960 Station interface and protector apparatus |
| 08/01/1989 | US4853953 Voice controlled dialer with separate memories for any users and authorized users |
| 08/01/1989 | US4853951 Cordless telephone with in-range monitoring |
| 08/01/1989 | US4853682 Data stored display device |
| 07/27/1989 | DE3804250C1 Circuit arrangement for a current limiter |
| 07/27/1989 | DE3802205A1 Device for setting communications standby in telephone sets |
| 07/27/1989 | DE3800778A1 Telephone set with two handsets |
| 07/26/1989 | CN2041872U Telephone hearing aids |
| 07/26/1989 | CN1034283A Three dimensional transmitting method |
| 07/25/1989 | US4852156 Private telephone system using a personal code number to access the telephone nearest to the code number holder |
| 07/25/1989 | US4852155 Systeme d'authentification analogique reciproque entre un terminal et une ligne de transmission |
| 07/25/1989 | US4852153 Single line master telephone with FAX connection |
| 07/25/1989 | US4852150 Automatic telephone answering system using a single single-tone signal for various operations |
| 07/25/1989 | US4852147 Telephone apparatus |
| 07/25/1989 | US4852146 Auxiliary dialing system for mobile telephones |
| 07/25/1989 | US4852145 Telephone subscriber loop test system |
| 07/25/1989 | US4851811 Communication device for entries of buildings |
| 07/25/1989 | CA1257940A1 Automatic personnel monitoring system |
| 07/20/1989 | DE3800020A1 Stationary winding/unwinding apparatus with a storage bobbin and automatic return device for mounting in existing installations without an electrical or mechanical splitting-up of the winding material |
| 07/19/1989 | EP0324316A1 Telephone dialing system |
| 07/19/1989 | CN2041471U Call switch for parallel automatic telephone |
| 07/19/1989 | CN2041470U Integrated acoustic frequency interstation (track maintenance) telephone extension |
| 07/18/1989 | US4850016 Microphone |
| 07/18/1989 | US4850015 Vehicular steering wheel telephone apparatus |
| 07/18/1989 | US4850013 Telephone call screening apparatus |
| 07/18/1989 | US4850005 Telephone answering device with artificial intelligence |
| 07/18/1989 | CA1257726A1 Telephone device |
| 07/18/1989 | CA1257725A1 Telephone cord groove and cord retaining means |
| 07/18/1989 | CA1257724A1 Telephone circuits |
| 07/18/1989 | CA1257723A1 Automatic telephone answering system |
| 07/18/1989 | CA1257650A1 Optical fiber bandwidth limiting method |
| 07/13/1989 | WO1989006463A1 Multi-use telephone extension control circuit and device |
| 07/11/1989 | US4847901 Telephone magnifier attachment |
| 07/11/1989 | US4847900 Infrared hookswitch for a telephone |
| 07/11/1989 | US4847898 Speech circuit configuration |
| 07/11/1989 | US4847897 Adaptive expander for telephones |
| 07/11/1989 | US4847895 Controllable annunciator using ring signal |
| 07/11/1989 | US4847890 Anonymous interactive telephone system |
| 07/11/1989 | US4847889 Single-line, plug-in telephone answering machine |
| 07/11/1989 | US4847888 Field telephone system |
| 07/11/1989 | US4847887 Telephone system in a vehicle |
| 07/11/1989 | US4847886 Method for causing large numbers of telephones to dial the same telephone numbers |
| 07/11/1989 | US4847818 Wristwatch radiotelephone |
| 07/11/1989 | US4847760 Electronic device for storing personal information |
| 07/11/1989 | US4847629 Retractable cellular antenna |
| 07/11/1989 | US4846708 Jack security device |
| 07/11/1989 | EP0306483A4 Telephone protection circuit. |
| 07/11/1989 | CA1257420A1 Line use indicator in a telephone set |