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
AT180085B
(en )
1954-11-10
Circuit arrangement for telecommunications systems, in particular for telephone systems with dialer operation
CH315053A
(en )
1956-07-15
Circuit arrangement in telecommunication systems, in particular telephone systems
CH314163A
(en )
1956-05-31
Selector switches for telecommunication systems, in particular telephone systems
CH313882A
(en )
1956-05-15
Circuit arrangement for telecommunications systems, in particular for telephone systems with dialer operation
CH317711A
(en )
1956-11-30
Multiple switches for telecommunication 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
CH315749A
(en )
1956-08-31
Circuit arrangement for subscriber telephone station
AT172559B
(en )
1952-09-25
Dialer for telecommunications, in particular telephone systems
CH313884A
(en )
1956-05-15
Circuit arrangement for limiting the test time in telecommunication systems with dialer operation, especially in telephone systems
CH309051A
(en )
1955-08-15
Circuit arrangement for line selectors in telecommunications systems, in particular in telephone systems.
CH296854A
(en )
1954-02-28
Switching device, in particular dialers for telecommunications systems.
AT175612B
(en )
1953-07-25
Circuit arrangement for telecommunications, in particular telephone dialing systems
AT180965B
(en )
1955-02-10
Contact field for voters in telecommunications systems, especially telephone systems
AT192968B
(en )
1957-11-11
Circuit arrangement for telecommunication systems, in particular telephone systems with dial-up operation
AT178381B
(en )
1954-05-10
Rotary selector for telecommunications, in particular telephone systems
CH293824A
(en )
1953-10-15
Circuit arrangement for surge storage in telecommunication systems, in particular telephone systems with dialer operation.
AT185410B
(en )
1956-04-25
Circuit arrangement for telephone extension systems with dialer operation
AT173486B
(en )
1952-12-27
Circuit arrangement in telephone systems with group dialers
AT193433B
(en )
1957-11-25
Circuit arrangement for telecommunications, in particular telephone systems
AT173488B
(en )
1952-12-27
Circuit arrangement for sub-exchanges in telephone systems with dialer operation
AT170194B
(en )
1952-01-25
Circuit arrangement for sub-exchanges in telephone systems with dialer operation
CH308703A
(en )
1955-07-31
Rotary selector for telecommunications, in particular telephone systems.
AT172816B
(en )
1952-10-25
Circuit arrangement for company lines in telecommunications, in particular telephone systems