CH363062A
(en )
1962-07-15
Device for an automatic telephone system for the transmission of tone-frequency dialing signals
DK86633C
(en )
1958-12-15
Plants for transmitting signals between two stations over a two-wire line.
CH318083A
(en )
1956-12-15
Regenerative repeater for telegraph signals
NL187540B
(en )
PIPE COUPLING.
FR1049815A
(en )
1954-01-04
Acatene type transmission for bicycles
FR1095006A
(en )
1955-05-26
Advanced connection for pipe element
FR1072144A
(en )
1954-09-08
Automatic telephone exchange
CH313886A
(en )
1956-05-15
Impulse receiver
DK83712C
(en )
1957-10-21
Multi-channel impulse communication system.
FR63760E
(en )
1955-10-03
Flexible elastic coupling for transmissions
DK79227C
(en )
1955-05-09
Coupling for receiving preamble signals and similar signals.
CH309043A
(en )
1955-08-15
Teletype receiver.
CH310093A
(en )
1955-09-30
Television transmitter installation.
DK81138C
(en )
1956-06-18
Coupling to telephone system.
DK82492C
(en )
1957-03-25
Coupling for connecting remote typewriter subscribers to a time transmitter located on a central.
DK94849C
(en )
1962-11-26
Impulse receiver.
DK81137C
(en )
1956-06-18
Automatic telephone system for transmitting signals over a two-wire line.
DK88108C
(en )
1959-11-09
System for signal transmission over a noise-infected transmission medium.
NL183116B
(en )
MULTIFREQUENCY SIGNAL RECEIVER.
DK82026C
(en )
1957-02-11
Multi-channel message transmission system.
DK85332C
(en )
1958-04-08
Automatic telephone system.
DK91475C
(en )
1961-08-07
Automatic telephone system.
DK107951C
(en )
1967-07-24
Automatic telephone system.
CH304565A
(en )
1955-01-15
Holding device for telephone receiver.
DK64128C
(en )
1945-12-03
Electrical System for Transmitting Signals through a Line.