CH355186A
(en )
1961-06-30
Acoustic signaling device, in particular for telephone sets
CH329942A
(en )
1958-05-15
Circuit arrangement for free selection processes in telecommunication systems, in particular telephone systems
CH324915A
(en )
1957-10-15
Circuit arrangement for telecommunications, in particular telephone systems
CH353408A
(en )
1961-04-15
Circuit arrangement for subscriber station in telecommunication systems, in particular telephone systems, with keypad selection
CH355483A
(en )
1961-07-15
Identification device for telecommunications, in particular telephone systems
AT198326B
(en )
1958-06-25
Circuit arrangement for voters in telecommunication systems, in particular telephone systems
CH356498A
(en )
1961-08-31
Double coincidence circuit for telecommunication systems, in particular telephone systems
CH315053A
(en )
1956-07-15
Circuit arrangement in telecommunication systems, in particular telephone systems
CH358837A
(en )
1961-12-15
Transmission switching system, in particular for telephone purposes
AT197442B
(en )
1958-04-25
Circuit arrangement for direction selector 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
CH397785A
(en )
1965-08-31
Relayless subscriber circuit for telecommunications, in particular telephone systems
CH354489A
(en )
1961-05-31
Circuit arrangement for relay line selectors in telecommunications, in particular telephone systems
CH353407A
(en )
1961-04-15
Circuit arrangement for an electronic selector for detouring in telecommunications, in particular telephone systems
CH353043A
(en )
1961-03-31
Circuit arrangement for electronic zoning devices in telecommunication systems, in particular telephone systems
AT199230B
(en )
1958-08-25
Protective housing for electrical systems, in particular telecommunication systems
CH384042A
(en )
1964-11-15
Electromagnetic-optical indicator, in particular for telephone exchange systems
CH362124A
(en )
1962-05-31
Voters, especially for telephone systems
AT196925B
(en )
1958-04-10
Circuit arrangement for memories in telecommunications, in particular telephone systems
CH352009A
(en )
1961-02-15
Circuit arrangement for memories in telecommunications, in particular telephone systems
AT193433B
(en )
1957-11-25
Circuit arrangement for telecommunications, in particular telephone systems
CH385927A
(en )
1964-12-31
Circuit arrangement for subscriber stations in telecommunication systems, in particular telephone systems
AT191940B
(en )
1957-09-25
Motor selectors for telecommunications, in particular telephone systems
AT193946B
(en )
1957-12-10
Circuit arrangement for relay selectors in telecommunication systems, in particular telephone systems
AT191474B
(en )
1957-08-26
Circuit arrangements for signaling via the test wire in telecommunication systems, in particular telephone systems