CH329942A
(en )
1958-05-15
Circuit arrangement for free selection processes in telecommunication systems, in particular telephone systems
CH412020A
(en )
1966-04-30
Circuit arrangement for determining the free or occupied state of the connecting elements of a switching network for telecommunications, in particular telephone switching systems
CH324915A
(en )
1957-10-15
Circuit arrangement for telecommunications, in particular telephone systems
AT194915B
(en )
1958-01-25
Circuit arrangement for switching fields in telecommunication systems and in particular in telephone systems
CH315053A
(en )
1956-07-15
Circuit arrangement in telecommunication systems, in particular telephone systems
CH351641A
(en )
1961-01-31
Circuit arrangement in telecommunications systems
CH353408A
(en )
1961-04-15
Circuit arrangement for subscriber station in telecommunication systems, in particular telephone systems, with keypad selection
CH413923A
(en )
1966-05-31
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
CH358837A
(en )
1961-12-15
Transmission switching system, in particular for telephone purposes
CH347861A
(en )
1960-07-31
Rotary dial for telecommunications and telephone systems
CH397785A
(en )
1965-08-31
Relayless subscriber circuit for telecommunications, in particular telephone systems
CH364531A
(en )
1962-09-30
Circuit arrangement for an electronic selector for detouring in telecommunication systems, in particular telephone systems
CH385927A
(en )
1964-12-31
Circuit arrangement for subscriber stations in telecommunication systems, in particular telephone systems
AT198804B
(en )
1958-07-25
Coordinate switch for switching devices in telecommunications systems, in particular telephone systems
AT193946B
(en )
1957-12-10
Circuit arrangement for relay selectors in telecommunication systems, in particular telephone systems
CH351306A
(en )
1961-01-15
Automatic switchgear, in particular for dialing levels in telecommunications systems
CH356498A
(en )
1961-08-31
Double coincidence circuit for telecommunication systems, in particular telephone systems
AT191940B
(en )
1957-09-25
Motor selectors for telecommunications, in particular telephone systems
AT197442B
(en )
1958-04-25
Circuit arrangement for direction selector in telecommunication systems, in particular telephone systems
CH415761A
(en )
1966-06-30
Switching device for telecommunication systems, in particular telephone systems
CH353043A
(en )
1961-03-31
Circuit arrangement for electronic zoning devices in telecommunication systems, in particular telephone systems
CH379585A
(en )
1964-07-15
Circuit arrangement for telecommunications, in particular telephone systems with frequency selection
CH331074A
(en )
1958-06-30
Circuit arrangement for keyboard selection in telecommunication systems, in particular telephone systems
AT193433B
(en )
1957-11-25
Circuit arrangement for telecommunications, in particular telephone systems
AT198326B
(en )
1958-06-25
Circuit arrangement for voters in telecommunication systems, in particular telephone systems