US5195132B1
(en )
1996-03-19
Telephone network speech signal enhancement
GB9626159D0
(en )
1997-02-05
Portable telephone set having wireless electroacoustic transducer
GB9107549D0
(en )
1991-05-29
Diaphragm for speaker
EP0452864A3
(en )
1992-09-02
Facsimile apparatus comprising cordless telephone set
GB2301261B
(en )
1997-04-16
Telephone with user recorded ringing signal
GB2249454B
(en )
1994-08-31
Speaker cover sheet
GB9113160D0
(en )
1991-08-07
Voice transducer
EP0459346A3
(en )
1992-07-01
Speaker and microphone unit for motovehicle-mounted mobile telephone
GB2268357B
(en )
1995-11-22
Moving coil electrodynamic electroacoustic transducer
NZ235436A
(en )
1992-06-25
Electrodynamic moving coil transducer for telephone handset: baffle between diaphragm and top cover
GB2243053B
(en )
1994-10-05
Telephone answering device
GB2250398B
(en )
1994-12-07
Apparatus for communication by telephone set and facsimile set through order wires
EP0483558A3
(en )
1992-11-04
Mounting of an electroacoustic transducer in a telephone handset
GB9114049D0
(en )
1991-08-14
Cellular telephone call detail recording system
AU111253S
(en )
1991-06-11
Mobile telephone
CS219491A3
(en )
1992-02-19
Combined acoustic system for telephone hand-sets
GB9021972D0
(en )
1990-11-21
Telephone handset
EP0452865A3
(en )
1992-12-23
Facsimile apparatus comprising cordless telephone set
EP0529143A3
(en )
1993-07-07
Diaphragm for loudspeaker or microphone
GB9103672D0
(en )
1991-04-10
Telephone call screening device
GB2263375B
(en )
1995-10-04
Speaker mounting device in loud-speaker telephone set
GB2252858B
(en )
1994-11-30
A device for mimicking the sound of a telephone ringing
EP0478979A3
(en )
1992-08-26
Electrodynamic loudspeaker
EP0490215A3
(en )
1993-01-13
Hands-free telephone set
CA65640S
(en )
1990-03-13
Telephone handset rest