CH329942A
(en )
1958-05-15
Circuit arrangement for free selection processes in telecommunication systems, in particular telephone systems
AT188761B
(en )
1957-02-11
Switching arrangement for keyboard selection in telecommunications systems, in particular telephone systems
CH353408A
(en )
1961-04-15
Circuit arrangement for subscriber station in telecommunication systems, in particular telephone systems, with keypad selection
CH331074A
(en )
1958-06-30
Circuit arrangement for keyboard selection in telecommunication systems, in particular telephone systems
CH315053A
(en )
1956-07-15
Circuit arrangement in telecommunication systems, in particular telephone systems
CH405433A
(en )
1966-01-15
Switching arrangement in an automatic telecommunication system, in particular a telephone system
CH358837A
(en )
1961-12-15
Transmission switching system, in particular for telephone purposes
CH413923A
(en )
1966-05-31
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
CH397785A
(en )
1965-08-31
Relayless subscriber circuit for telecommunications, in particular telephone systems
CH412998A
(en )
1966-05-15
Centrally controlled switching system, in particular for telephone purposes
CH351306A
(en )
1961-01-15
Automatic switchgear, in particular for dialing levels in telecommunications systems
CH363380A
(en )
1962-07-31
Circuit arrangement for establishing connections in telecommunication systems, in particular telephone systems
CH415761A
(en )
1966-06-30
Switching device for telecommunication systems, in particular telephone systems
AT191940B
(en )
1957-09-25
Motor selectors for telecommunications, in particular telephone systems
AT182755B
(en )
1955-08-10
Subscriber selection device for automatic switching systems, in particular telephone systems
AT198804B
(en )
1958-07-25
Coordinate switch for switching devices in telecommunications systems, in particular telephone systems
CH374102A
(en )
1963-12-31
Coordinate multiple switches for telecommunications, in particular telephone switching systems
CH317711A
(en )
1956-11-30
Multiple switches for telecommunication systems, in particular telephone systems
AT182753B
(en )
1955-08-10
Group selection device for automatic switching systems, in particular telephone systems
CH411046A
(en )
1966-04-15
Centrally controlled switching system, in particular for telephone purposes
CH356498A
(en )
1961-08-31
Double coincidence circuit for telecommunication systems, in particular telephone systems
AT194916B
(en )
1958-01-25
Dialing device for telecommunication systems, in particular for telephone dialing systems
CH347230A
(en )
1960-06-30
Dialing device for telecommunication systems, in particular for telephone dialing systems
AT197442B
(en )
1958-04-25
Circuit arrangement for direction selector in telecommunication systems, in particular telephone systems
AT193946B
(en )
1957-12-10
Circuit arrangement for relay selectors in telecommunication systems, in particular telephone systems