| Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223) |
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| 03/15/1989 | CN2034354U Telephone extension arrangement |
| 03/14/1989 | US4813071 Laminar type telephone connector block |
| 03/14/1989 | US4813070 Telephone intercept system |
| 03/14/1989 | US4813069 Computer system having automatic answering telephone function |
| 03/14/1989 | US4813068 Easily operable automatic telephone answering/recording apparatus |
| 03/14/1989 | US4813067 Apparatus for connecting selectively a telephone answering device or additional equipment, such as a facsimile machine, to telephone lines |
| 03/14/1989 | US4811922 Flat wire harness attaching unit |
| 03/08/1989 | CN1003555B Full duplex speakerphone for radio and landline telephones |
| 03/07/1989 | US4811387 Holder and credit-card unlatching mechanism for a hand-held telephone |
| 03/07/1989 | US4811383 Message exchange device for communication between a manager and particular persons |
| 03/07/1989 | CA1250978A1 Mixed mode dialing system |
| 03/07/1989 | CA1250977A1 Cordless telephone |
| 03/02/1989 | DE3727917A1 Asymmetrical handset for a cordless telephone |
| 03/01/1989 | EP0305301A1 Signal compressor circuit, in particular for telephone set |
| 03/01/1989 | EP0305108A2 Cordless telephone system |
| 03/01/1989 | EP0304998A2 PABX cordless telephone system |
| 03/01/1989 | CN2033562U Electronic telephone lock-control device |
| 02/28/1989 | US4809323 Telephone network interface apparatus |
| 02/28/1989 | US4809322 Circuit arrangement for a telephone station with ground connection |
| 02/28/1989 | US4809320 Door security system |
| 02/28/1989 | US4809317 Telephone line exclusion device |
| 02/28/1989 | US4809315 Cordless telephone system |
| 02/28/1989 | US4807961 Local area network system |
| 02/28/1989 | CA1250673A1 Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels |
| 02/28/1989 | CA1250650A1 Computer controlled telephone interface |
| 02/22/1989 | EP0304257A2 Voice enhancer system |
| 02/22/1989 | EP0303787A2 Hand set |
| 02/22/1989 | EP0303766A2 Device for cleaning a contacting connection |
| 02/22/1989 | CN1031306A Home unit for wireless digital telephone system |
| 02/21/1989 | US4807278 Telecommunication controller having a telephone line sharing function |
| 02/21/1989 | US4807275 Dispatch board system with displays for indicating the status of various messages |
| 02/21/1989 | US4805502 Sheet material slotting device |
| 02/16/1989 | DE3725883A1 Device for connecting and disconnecting a telephone set |
| 02/16/1989 | DE3725882A1 Method and device for transmitting signals of a telephone appliance |
| 02/16/1989 | DE3725838A1 Detecting and evaluating earthing mode required - using microprocessor-controlled dialling pulse switch in bilingual telephone subscribers appts. |
| 02/15/1989 | EP0303067A2 Cordless telephone with battery saving function |
| 02/14/1989 | US4805212 Automatic telephone dialing method and apparatus |
| 02/14/1989 | US4805211 Subscriber set programming module |
| 02/14/1989 | US4805210 Automatic telephone line sharing and lockout apparatus |
| 02/14/1989 | US4805206 Function controller serving as an automatic telephone answering machine in an audio/video component system |
| 02/14/1989 | US4805204 Automatic telephone apparatus and set-up method therefor |
| 02/14/1989 | US4805203 Cordless telephone system |
| 02/09/1989 | WO1989001264A1 Analog/digital data storage system |
| 02/09/1989 | DE3725326A1 Handset body for telephone sets |
| 02/08/1989 | EP0302189A2 Display device with liquid crystal display cells |
| 02/08/1989 | CN2032381U Anti-electromagnetic interference electronic telephone set |
| 02/08/1989 | CN2032380U Primary and secondary telephone sets switcher for mutual call telephone |
| 02/07/1989 | US4803724 Hand set |
| 02/07/1989 | US4803723 Telephone |
| 02/07/1989 | US4803717 Automatic answering telephone with memory storage having storage indication and an alarm |
| 02/07/1989 | US4803437 Digital transmission system |
| 02/07/1989 | US4802243 Acoustic headgear-sun visor assembly |
| 02/02/1989 | DE3724613A1 Method for visual display of processes which are connection-independent and processes which accompany connection |
| 02/02/1989 | DE3724142A1 Circuit arrangement for detecting positive, negative or missing potential at the input |
| 02/01/1989 | EP0301740A2 Method for locking to the user's card in a portable radio telephone |
| 02/01/1989 | EP0301573A2 Registration of a new cordless telephone to an existing system |
| 02/01/1989 | EP0301480A2 Telephone hand set support, particularly for a car telephone |
| 02/01/1989 | CN2031985U Automatically sterilizing type telephone set |
| 01/31/1989 | US4802241 Pager and adjustable clip |
| 01/31/1989 | US4802211 Portable cordless phone holder |
| 01/31/1989 | US4802210 Keyboard security device |
| 01/31/1989 | US4802208 Hot-line device for telephone sets |
| 01/31/1989 | US4802207 Voltage-sensitive telephone line monitor |
| 01/31/1989 | US4802203 Telephone message recording device with displays to indicate the number of calls received and messages recorded |
| 01/31/1989 | US4802202 Telephone call selector |
| 01/31/1989 | US4802201 Control system of a radio telephone apparatus |
| 01/31/1989 | US4802200 Radio telephone system control apparatus and method |
| 01/31/1989 | US4802199 Method and apparatus for providing virtual facility communication service |
| 01/31/1989 | CA1249682A1 Telephone set |
| 01/31/1989 | CA1249681A2 First dialed digit detector and comparator |
| 01/26/1989 | WO1989000797A1 Motorcar telephone |
| 01/26/1989 | DE3723620A1 Autotelephonanlage Autotelephonanlage |
| 01/26/1989 | DE3723338A1 Visible scale of the sound volume at the telephone |
| 01/24/1989 | US4800585 Saturating bipolar switch circuit for telephone dial pulsing |
| 01/24/1989 | US4800584 Index device for automatic information retrieval |
| 01/24/1989 | US4800582 For protecting a wearer's eyes |
| 01/24/1989 | US4800439 Data communication apparatus adapted to perform data communication and speech communication |
| 01/24/1989 | US4800438 Telephone console for restaurant tables |
| 01/19/1989 | DE3822008A1 Extendable telephone pivot arm |
| 01/18/1989 | EP0299515A2 Method of connecting a cordless telephone by radio |
| 01/18/1989 | CN2031184U User exchanger bell current generator with detector |
| 01/18/1989 | CN2031183U Luminous dial for telephone |
| 01/18/1989 | CN1030506A Telephone transmitter-receiver set capable of operating handset by wireless system |
| 01/17/1989 | US4799254 Portable communication terminal for remote database query |
| 01/17/1989 | US4799251 ESS equipment testing device |
| 01/17/1989 | US4799144 Multi-function communication board for expanding the versatility of a computer |
| 01/12/1989 | WO1989000320A1 Memory card for telephone calls |
| 01/12/1989 | DE3721984A1 Method for controlling voice-controlled hands-free devices of digital subscriber terminals |
| 01/11/1989 | EP0298750A2 Radio telephone system |
| 01/11/1989 | EP0298749A2 Cordless telephone system |
| 01/11/1989 | EP0298719A2 Loudspeaking telephone with a variable gain circuit |
| 01/11/1989 | EP0298130A1 Method of controlling the connection of cordless telephone equipment |
| 01/11/1989 | CN1030337A Ultraviolet sterilizer for telephone transmitter |
| 01/10/1989 | US4797924 Vehicle voice recognition method and apparatus |
| 01/10/1989 | US4797916 Telephone handset cradle mounting |
| 01/10/1989 | US4797914 Telephone display |
| 01/10/1989 | US4797912 Telephone answering device having pushbutton controlled standby mode |
| 01/10/1989 | US4797909 Remotely programmable telephone answering system with immediate verification upon entry |
| 01/10/1989 | CA1248650A1 Telephone apparatus |
| 01/04/1989 | EP0297914A2 Radio communication system |