| Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223) |
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| 05/29/1992 | WO1992009163A1 Portable telephone housing |
| 05/29/1992 | WO1992009146A1 Battery saver for a communication device |
| 05/27/1992 | EP0487501A1 Circuit arrangement for a loop current fed subscriber station |
| 05/27/1992 | EP0487344A2 Portable radio telephone capable of assigning an answering function to a desired key |
| 05/27/1992 | EP0487197A2 Telephone answer supervision and service selection |
| 05/27/1992 | EP0486990A2 Auxiliary attenuator arrangement for use in voice-switched speakerphone and method of selectively inserting communication loss in speakerphone paths |
| 05/27/1992 | EP0422121A4 Method and apparatus for programming devices to recognize voice commands |
| 05/27/1992 | CN2105810U Real-time control telephone answer interface device |
| 05/27/1992 | CN2105809U Volume increasing light control device for telephone bell |
| 05/26/1992 | US5117456 Wall mounted telephone cord reel |
| 05/26/1992 | US5117455 Telephone keypad matrix |
| 05/26/1992 | US5117452 Telephone interface for a computer for receiving and transmitting information during the silent interval between ringing |
| 05/26/1992 | US5117451 Interface to and operation of a voice messaging system |
| 05/26/1992 | US5117450 Cellular telephone with standard telephone set |
| 05/26/1992 | US5117449 Dual receiver apparatus for integrated paging and radiotelephone functions |
| 05/26/1992 | US5117423 Data transmission over a time division duplex channel |
| 05/26/1992 | US5117073 Control signal initiator responsive to a hinge position |
| 05/26/1992 | CA1301973C Telephone call blocker |
| 05/26/1992 | CA1301849C Power saving arrangement and power saving method |
| 05/21/1992 | DE4036404A1 Multiple telephone party lines connector for exchange lines - couples decentralised-locking telephones using overall loop current detector with AC by=pass capacitor and relay contacts for bridging during conversation |
| 05/20/1992 | EP0486181A2 Mobile radio telephone |
| 05/20/1992 | EP0486089A2 A method of operating a radio communications system, a radio communication system and a secondary station for use in the system |
| 05/20/1992 | EP0485935A1 Signal processing circuit for the european digital cellular radio-telephone system |
| 05/20/1992 | EP0485925A2 Monolithically integratable switch with low power dissipation for telephone sets and the like |
| 05/20/1992 | EP0485900A2 Subscriber equipment provided with a read/write memory with at least two variable size memory fields |
| 05/20/1992 | EP0485710A2 Radiotransceiver for FDM-TDM transmission system |
| 05/20/1992 | EP0423131A4 Personal signalling telephone |
| 05/20/1992 | CN2105151U Secretary telephone |
| 05/20/1992 | CN2105150U Long efficacious and fragrant sterilizing flat for microphone |
| 05/20/1992 | CN2105149U Hand-held telephone with wireless microphone |
| 05/19/1992 | US5115465 Shoulder rest |
| 05/19/1992 | US5115464 Multiline telephone answering system and interface therefore |
| 05/19/1992 | US5114091 Dual reel cord take-up device |
| 05/19/1992 | US5113612 Method of providing a set of instructions |
| 05/19/1992 | CA1301388C Public terminal receptacle |
| 05/19/1992 | CA1301387C Security handset |
| 05/19/1992 | CA1301386C Telephone apparatus and a method of controlling same |
| 05/14/1992 | WO1992008324A1 Improved call set-up and spectrum sharing in radio communication on systems with dynamic channel allocation |
| 05/14/1992 | WO1992008310A1 Selectable cordless or corded telecommunications system |
| 05/14/1992 | WO1992008309A1 Telephone calling apparatus and method |
| 05/14/1992 | WO1992008293A1 Carry case assembly for a portable electrical device |
| 05/14/1992 | WO1992008285A1 Method and apparatus for pre-identification of keys and switches |
| 05/14/1992 | CA2046736A1 Cellular telephone call detail recording system |
| 05/13/1992 | EP0484334A1 Electronic apparatus for ''hands off'' control of a voice mail system |
| 05/13/1992 | CN1061124A Disinfecting film for telephone |
| 05/12/1992 | US5113436 Telephone hang-up cup having rectractable latch member operative responsive to actuation force applied at either side thereof |
| 05/12/1992 | US5113435 Structure of telephone keyboard |
| 05/12/1992 | US5113434 Battery boosted dial memory |
| 05/12/1992 | US5113428 Cordless telephone headset |
| 05/12/1992 | CA1300687C Radio telephone apparatus |
| 05/10/1992 | CA2029679A1 Analog/digital telephone test set |
| 05/07/1992 | DE4116016C1 Handset for telephone appts. - has housing halves supporting leads and contact surfaces |
| 05/06/1992 | WO1992008221A1 Selective call receiver having a received message indicator |
| 05/06/1992 | EP0484051A2 Telephone interface circuit |
| 05/06/1992 | EP0483559A2 Handset structure for telephone sets |
| 05/06/1992 | EP0483558A2 Mounting of an electroacoustic transducer in a telephone handset |
| 05/06/1992 | CN1016564B Dialing features for cellular telephone with standard telephone set |
| 05/06/1992 | CN1016553B Subscriber unit for wireless digital subscriber communication system |
| 05/05/1992 | US5111503 Portable telephone set |
| 05/05/1992 | US5111502 Telephone line bridging sensor |
| 05/05/1992 | US5111501 Telephone terminal device having speech recognition unit |
| 05/05/1992 | US5111500 Handset or speaker message retrieval system |
| 05/05/1992 | US5111499 Cordless telephone apparatus having a ringer circuit operable during power failure |
| 05/05/1992 | US5111498 Hinged-case sound and vision communications terminal, in particular a video-phone |
| 05/05/1992 | US5111497 Alarm and test system for a digital added main line |
| 05/05/1992 | US5111360 Onboard telephone package for vehicle |
| 05/05/1992 | CA1300289C Passive universal communicator |
| 05/05/1992 | CA1300231C Automobile telephone device with battery saver |
| 04/30/1992 | WO1992007327A1 Telecommunications booth and method of use |
| 04/29/1992 | EP0482745A2 Method for operating an apparatus for facilitating communications |
| 04/29/1992 | EP0482503A2 Mobile radio communication system having mobile base and portable devices as a mobile station |
| 04/29/1992 | EP0481976A1 Intercom telephone |
| 04/28/1992 | US5109539 Portable communication device |
| 04/28/1992 | US5109537 Telecommunication apparatus having an id rechecking function |
| 04/28/1992 | US5109525 Two-way radio with voice storage |
| 04/28/1992 | US5109412 Hand-held pay station telephone dispenser and cord retractor |
| 04/28/1992 | US5109411 Telephone handset cradle mount |
| 04/28/1992 | US5109410 Two-line, hands-free telephone system |
| 04/28/1992 | US5109393 Mobile communications system insensitive to false frame sync |
| 04/28/1992 | US5108315 Pay telephone station repair technician's adapter |
| 04/22/1992 | EP0481887A2 Communication apparatus having an electronic telephone book function |
| 04/22/1992 | EP0481389A2 Facsimile apparatus |
| 04/22/1992 | CN2102590U Multifunctional telephone volume increasing device |
| 04/22/1992 | CN2102589U Anti-explosive carvier call telephone |
| 04/22/1992 | CN1016391B Cordless telephone |
| 04/21/1992 | US5107404 Circuit board assembly for a cellular telephone system or the like |
| 04/16/1992 | WO1992006523A1 Circuit protection device |
| 04/16/1992 | DE4035529C1 Telephone system with interface to exchange - includes coupling unit for data transmission between subscribers appts. and transceiver of mobile radio telephone |
| 04/15/1992 | EP0480842A1 Telephone set with a single programmable chip |
| 04/15/1992 | EP0410978A4 Animated data display interleaving |
| 04/15/1992 | CN2101978U 256 route program control power line carrier telephony |
| 04/14/1992 | US5105461 Telephone line interface circuit |
| 04/14/1992 | US5105460 Plug-in telephone facility |
| 04/14/1992 | US5105458 Mobile telephone system having message recording mode during failures |
| 04/14/1992 | CA1298924C Circuit that incorporates passive and active components |
| 04/14/1992 | CA1298877C Radio telephone apparatus with voice actuated dialing |
| 04/11/1992 | CA2051087A1 Automatically testing telephone lines |
| 04/09/1992 | DE4042315A1 Acoustic coupling system for handsets |
| 04/09/1992 | DE4031092A1 Telephone system with modems for public network connections - facilitates transmission of telephone signals between movable handset and fixed telephone point via power distribution wiring |
| 04/08/1992 | CN2101352U High security toll telephone instrument |