CH331072A
(en )
1958-06-30
Circuit arrangement for a subscriber line in an automatic telephone exchange
CH345369A
(en )
1960-03-31
Call detector device for an automatic telecommunication system, in particular a telephone system
CH354809A
(en )
1961-06-15
Device for an automatic telephony system
CH329942A
(en )
1958-05-15
Circuit arrangement for free selection processes in telecommunication systems, in particular telephone systems
CH336098A
(en )
1959-02-15
Test facility in a telephone system
CH355483A
(en )
1961-07-15
Identification device 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
AT182753B
(en )
1955-08-10
Group selection device for automatic switching systems, in particular telephone systems
AT182755B
(en )
1955-08-10
Subscriber selection device for automatic switching systems, in particular telephone systems
AT194916B
(en )
1958-01-25
Dialing device for telecommunication systems, in particular for telephone dialing systems
CH347230A
(en )
1960-06-30
Dialing device for telecommunication systems, in particular for telephone dialing systems
CH351306A
(en )
1961-01-15
Automatic switchgear, in particular for dialing levels in telecommunications systems
AT191940B
(en )
1957-09-25
Motor selectors for telecommunications, in particular telephone systems
AT191947B
(en )
1957-09-25
Device for an automatic telecommunication system
AT210924B
(en )
1960-09-10
Semi-electronic system for telecommunication systems, in particular automatic telephone systems
CH336453A
(en )
1959-02-28
Motor selectors for telecommunications, in particular telephone systems
CH356498A
(en )
1961-08-31
Double coincidence circuit for telecommunication systems, in particular telephone systems
AT191945B
(en )
1957-09-25
Device for traffic monitoring in telecommunications, in particular telephone systems
AT193946B
(en )
1957-12-10
Circuit arrangement for relay selectors in telecommunication systems, in particular telephone systems
AT197442B
(en )
1958-04-25
Circuit arrangement for direction selector in telecommunication systems, in particular telephone systems
CH357440A
(en )
1961-10-15
Circuit arrangement for a multiple usable coupling field in telecommunications, in particular telephone systems
AT198326B
(en )
1958-06-25
Circuit arrangement for voters 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
AT182754B
(en )
1955-08-10
Storage and conversion devices for automatic switching systems, in particular telephone telephone systems
AT189659B
(en )
1957-04-25
Dialing device for message systems