CH324915A
(en )
1957-10-15
Circuit arrangement for telecommunications, in particular telephone systems
CH329942A
(en )
1958-05-15
Circuit arrangement for free selection processes in telecommunication systems, in particular telephone systems
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
CH315053A
(en )
1956-07-15
Circuit arrangement in telecommunication systems, in particular telephone systems
AT178381B
(en )
1954-05-10
Rotary selector for telecommunications, in particular telephone systems
AT173737B
(en )
1953-01-26
Rotary selector for telecommunication systems, in particular telephone systems
CH296854A
(en )
1954-02-28
Switching device, in particular dialers for telecommunications systems.
CH308703A
(en )
1955-07-31
Rotary selector for telecommunications, in particular telephone systems.
CH309051A
(en )
1955-08-15
Circuit arrangement for line selectors in telecommunications systems, in particular in telephone systems.
AT172559B
(en )
1952-09-25
Dialer for telecommunications, in particular telephone systems
AT180965B
(en )
1955-02-10
Contact field for voters in telecommunications systems, especially telephone systems
AT182415B
(en )
1955-06-25
Selector relays for telecommunications, in particular telephone systems
CH358837A
(en )
1961-12-15
Transmission switching system, in particular for telephone purposes
CH288597A
(en )
1953-01-31
Rotary selector for telecommunication systems, in particular telephone systems.
AT180085B
(en )
1954-11-10
Circuit arrangement for telecommunications systems, in particular for telephone systems with dialer operation
AT171124B
(en )
1952-04-25
Circuit arrangement for transmissions, in particular for alternating current transmissions in telecommunications systems
AT172816B
(en )
1952-10-25
Circuit arrangement for company lines in telecommunications, in particular telephone systems
CH305581A
(en )
1955-02-28
Circuit arrangement for telecommunication systems with relay selectors, in particular telephone systems.
AT175612B
(en )
1953-07-25
Circuit arrangement for telecommunications, in particular telephone dialing systems
CH305582A
(en )
1955-02-28
Circuit arrangement for telecommunications, in particular telephone systems with relay selectors.
CH313882A
(en )
1956-05-15
Circuit arrangement for telecommunications systems, in particular for telephone systems with dialer operation
CH313884A
(en )
1956-05-15
Circuit arrangement for limiting the test time in telecommunication systems with dialer operation, especially in telephone systems
AT170120B
(en )
1952-01-25
Self-breakers, in particular for step switches in telephone systems
AT193433B
(en )
1957-11-25
Circuit arrangement for telecommunications, in particular telephone systems