CH400251A
(en )
1965-10-15
Electronic telephone switchboard
CH410069A
(en )
1966-03-31
Circuit arrangement for testing lines in telecommunication systems, in particular telephone systems
CH396998A
(en )
1965-08-15
Circuit arrangement for telecommunications, in particular telephone systems, in which lines can be interconnected via switching matrices
CH329942A
(en )
1958-05-15
Circuit arrangement for free selection processes in telecommunication systems, in particular telephone systems
CH399548A
(en )
1965-09-30
Control method for electronic time division multiplex switching devices in telecommunication systems, in particular telephone systems
CH324915A
(en )
1957-10-15
Circuit arrangement for telecommunications, in particular telephone systems
CH391805A
(en )
1965-05-15
Wiring board for telecommunications, in particular telephone systems
CH403873A
(en )
1965-12-15
Circuit arrangement for testing lines in telecommunication systems, in particular telephone systems
CH397785A
(en )
1965-08-31
Relayless subscriber circuit for telecommunications, in particular telephone systems
CH405433A
(en )
1966-01-15
Switching arrangement in an automatic telecommunication system, in particular a telephone system
CH413923A
(en )
1966-05-31
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
AT246233B
(en )
1966-04-12
Circuit arrangement for telecommunications, in particular telephone systems
CH415761A
(en )
1966-06-30
Switching device for telecommunication systems, in particular telephone systems
CH315053A
(en )
1956-07-15
Circuit arrangement in telecommunication systems, in particular telephone systems
CH384042A
(en )
1964-11-15
Electromagnetic-optical indicator, in particular for telephone exchange systems
CH378375A
(en )
1964-06-15
Circuit arrangement for connecting lines that can be used in both directions in telecommunication systems, in particular telephone systems
CH364531A
(en )
1962-09-30
Circuit arrangement for an electronic selector for detouring in telecommunication systems, in particular telephone systems
CH411045A
(en )
1966-04-15
Subscriber circuit for telecommunications, in particular telephone systems
CH409004A
(en )
1966-03-15
Circuit arrangement, in particular for telephone systems, for converting input information
CH416757A
(en )
1966-07-15
Circuit arrangement for the transmission of signal signs via multi-core telecommunication lines, in particular for telephone systems
CH353043A
(en )
1961-03-31
Circuit arrangement for electronic zoning devices in telecommunication systems, in particular telephone systems
CH372096A
(en )
1963-09-30
Circuit arrangement for power supply devices in telecommunication systems, in particular telephone systems
AT284914B
(en )
1970-10-12
Wiring field for telecommunications, in particular telephone systems
AT218080B
(en )
1961-11-10
Subscriber circuit for intercom systems
CH410068A
(en )
1966-03-31
Circuit arrangement for message transmission systems, in particular for telephone systems