GB8419191D0
(en )
1984-08-30
Voice recognizing telephone call denial
JPS57109436A
(en )
1982-07-07
Subscriber's telephone set
IT8422061A0
(en )
1984-07-26
ELECTROACOUSTIC TRANSDUCER OF THE MOVING COIL TYPE FOR USE IN TELEPHONE EQUIPMENT.
GB1540553A
(en )
1979-02-14
Subscriber's telephone line equipment
IT8423869A0
(en )
1984-12-03
TELEPHONE ANSWER CIRCUIT THROUGH VOICE SYNTHESIS.
GB2013069B
(en )
1982-02-17
Telephone answering device
JPS57212853A
(en )
1982-12-27
Subscriber's telephone electronic voice circuit
GB2018093B
(en )
1982-06-23
Telephone subscriber's line circuit
IT1176929B
(en )
1987-08-18
TELEPHONE ANSWERING MACHINE FOR USE WITH A TELEPHONE ANSWERING SYSTEM
IT8026650A0
(en )
1980-12-15
INTERFACE FOR TELEPHONE SUBSCRIBER LINE.
FR2552288B1
(en )
1989-03-24
TELEPHONE SUBSCRIBER
IT8120711V0
(en )
1981-02-09
DEVICE TO SUPPORT THE MICROPHONE OF A TELEPHONE EQUIPMENT DURING A CONVERSATION.
GB1538017A
(en )
1979-01-10
Subscriber's telephone line equipment
JPS56115064A
(en )
1981-09-10
Portable telephone answering device
SG42187G
(en )
1987-07-17
Telephone ringing signal generation
FR2511211B1
(en )
1987-07-10
SPECIAL TELEPHONE HANDSET FOR HEARING DEFICIENTS
ATA21383A
(en )
1983-12-15
TELEPHONE MICROPHONE
GB2023966B
(en )
1982-05-06
Telephone subscriber's apparatus
IL63653A0
(en )
1981-11-30
Line powered transformerless loudspeaking telephone
AR231890A1
(en )
1985-03-29
SUBSCRIBER TELEPHONE DEVICE
IT7921202A0
(en )
1979-03-22
APPARATUS AND PROCEDURE FOR OPERATION OF A SYSTEM FOR TRANSMISSION OF CODE AT MULTIPLE VOICE FREQUENSIES FOR THE INITIATION OF TELEPHONE CALLS.
IT8312538A0
(en )
1983-06-03
ADDITIONAL HANDSET FOR TELEPHONE EQUIPMENT
FR2488090B1
(en )
1987-11-13
NUMBERING DEVICE FOR TELEPHONE SUBSCRIBERS
IT1185749B
(en )
1987-11-12
DEVICE TO NEUTRALIZE THE USER'S VOICE TELEPHONE WITH THE TELEPHONE SPEAKER
GB2080596B
(en )
1985-06-19
Telephone answering device