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
CH305582A
(en )
1955-02-28
Circuit arrangement for telecommunications, in particular telephone systems with relay selectors.
CH315053A
(en )
1956-07-15
Circuit arrangement in telecommunication systems, in particular telephone systems
CH305581A
(en )
1955-02-28
Circuit arrangement for telecommunication systems with relay selectors, in particular telephone systems.
CH353408A
(en )
1961-04-15
Circuit arrangement for subscriber station in telecommunication systems, in particular telephone systems, with keypad selection
CH314163A
(en )
1956-05-31
Selector switches for telecommunication systems, in particular telephone systems
CH317711A
(en )
1956-11-30
Multiple switches for telecommunication systems, in particular telephone systems
CH358837A
(en )
1961-12-15
Transmission switching system, in particular for telephone purposes
CH309051A
(en )
1955-08-15
Circuit arrangement for line selectors in telecommunications systems, in particular in telephone systems.
AT182415B
(en )
1955-06-25
Selector relays for telecommunications, in particular telephone systems
CH413923A
(en )
1966-05-31
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
AT193946B
(en )
1957-12-10
Circuit arrangement for relay selectors in telecommunication systems, in particular telephone systems
AT192968B
(en )
1957-11-11
Circuit arrangement for telecommunication systems, in particular telephone systems with dial-up operation
CH313882A
(en )
1956-05-15
Circuit arrangement for telecommunications systems, in particular for telephone systems with dialer operation
AT175612B
(en )
1953-07-25
Circuit arrangement for telecommunications, in particular telephone dialing systems
AT193433B
(en )
1957-11-25
Circuit arrangement for telecommunications, in particular telephone systems
AT191940B
(en )
1957-09-25
Motor selectors for telecommunications, in particular telephone systems
CH354489A
(en )
1961-05-31
Circuit arrangement for relay line selectors in telecommunications, in particular telephone systems
CH296854A
(en )
1954-02-28
Switching device, in particular dialers for telecommunications systems.
CH313884A
(en )
1956-05-15
Circuit arrangement for limiting the test time in telecommunication systems with dialer operation, especially in telephone systems
AT197442B
(en )
1958-04-25
Circuit arrangement for direction selector in telecommunication systems, in particular telephone systems
CH336453A
(en )
1959-02-28
Motor selectors for telecommunications, in particular telephone systems
AT172816B
(en )
1952-10-25
Circuit arrangement for company lines in telecommunications, in particular telephone systems
AT210924B
(en )
1960-09-10
Semi-electronic system for telecommunication systems, in particular automatic telephone systems