CH528193A
(en )
1972-09-15
Circuit arrangement for a telecommunications, in particular telephone switching system
CH467567A
(en )
1969-01-15
Circuit arrangement in telecommunications, in particular telephone switching systems
AT274054B
(en )
1969-09-10
Circuit arrangement for centrally controlled telecommunications systems, in particular telephone switching systems
AT260310B
(en )
1968-02-26
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems with switching networks
CH435387A
(en )
1967-05-15
Circuit arrangement for telecommunications, in particular telephone systems, with central billing
CH413923A
(en )
1966-05-31
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
CH445574A
(en )
1967-10-31
Circuit arrangement for telecommunications switching systems, in particular telephone systems with switching fields
AT281128B
(en )
1970-05-11
Circuit arrangement for telecommunications switching systems, in particular telephone branch exchange systems
AT286367B
(en )
1970-12-10
Circuit arrangement for transmission in telecommunications, in particular telephone switching systems
AT246233B
(en )
1966-04-12
Circuit arrangement for telecommunications, in particular telephone systems
CH411045A
(en )
1966-04-15
Subscriber circuit for telecommunications, in particular telephone systems
AT290633B
(en )
1971-06-11
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
CH490777A
(en )
1970-05-15
Telecommunications, in particular telephone systems
CH470116A
(en )
1969-03-15
Number switches for telecommunications equipment, in particular telephone equipment
AT274053B
(en )
1969-09-10
Circuit arrangement for telecommunications, in particular telephone systems
AT294198B
(en )
1971-11-10
Circuit arrangement for telecommunications, in particular telephone switching systems
AT266227B
(en )
1968-11-11
Circuit arrangement for centrally controlled telecommunication systems, in particular telephone systems, with two-way connections
CH453437A
(en )
1968-06-14
Circuit arrangement for telecommunication switching systems, in particular telephone systems
AT294930B
(en )
1971-12-10
Arrangement for telecommunications switching systems, in particular telephone systems
CH427920A
(en )
1967-01-15
Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with multi-stage switching matrices
AT294196B
(en )
1971-11-10
Circuit arrangement for telecommunication switching systems, in particular telephone dialing systems with indirectly adjustable coupling devices
CH473516A
(en )
1969-05-31
Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with two-wire connection
CH486180A
(en )
1970-02-15
Circuit arrangement for telephone number correctors in telecommunications, in particular telephone switching systems
AT304649B
(en )
1973-01-10
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
AT254279B
(en )
1967-05-10
Circuit arrangement for telecommunications, in particular telephone switching systems with centrally controlled switching networks