AT303829B
(en )
1972-12-11
Circuit arrangement for an electronic switching network in telecommunications, in particular telephone switching systems
CH467567A
(en )
1969-01-15
Circuit arrangement in telecommunications, in particular telephone switching systems
AT260310B
(en )
1968-02-26
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems with switching networks
AT274054B
(en )
1969-09-10
Circuit arrangement for centrally controlled telecommunications systems, in particular telephone switching systems
CH435387A
(en )
1967-05-15
Circuit arrangement for telecommunications, in particular telephone systems, with central billing
CH477792A
(en )
1969-08-31
Circuit arrangement for a coupling network in telecommunications, in particular telephone switching systems
CH473516A
(en )
1969-05-31
Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with two-wire connection
AT257701B
(en )
1967-10-25
Circuit arrangement for telecommunication, in particular telephone systems with two-way connections
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
CH536586A
(en )
1973-04-30
Circuit arrangement for telecommunication, in particular telephone switching systems, with time division multiple operation
AT290633B
(en )
1971-06-11
Circuit arrangement for telecommunication switching systems, 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
AT278914B
(en )
1970-02-25
Circuit arrangement for subscriber stations with keypad selection in telecommunications, in particular telephone systems
CH521667A
(en )
1972-04-15
Circuit arrangement for telecommunications systems, in particular telephone exchanges, with cross-field control devices
AT294196B
(en )
1971-11-10
Circuit arrangement for telecommunication switching systems, in particular telephone dialing systems with indirectly adjustable coupling devices
AT309540B
(en )
1973-08-27
Circuit arrangement for centrally controlled telecommunications switching systems, in particular telephone switching systems, with two-way connections
CH519284A
(en )
1972-02-15
Circuit arrangement for telecommunications, in particular telephone exchanges, with time-division multiple switching
AT290631B
(en )
1971-06-11
Circuit arrangement for telecommunication, in particular telephone systems with multi-stage coupling devices
AT294198B
(en )
1971-11-10
Circuit arrangement for telecommunications, in particular telephone switching systems
CH521696A
(en )
1972-04-15
Circuit arrangement for telecommunications, in particular telephone switching systems with time-division multiple switching
CH518656A
(en )
1972-01-31
Circuit arrangement for telecommunications, in particular telephone switching systems with time-division multiple switching
CH532348A
(en )
1972-12-31
Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with four-wire connection through-connection
AT288494B
(en )
1971-03-10
Circuit arrangement for telecommunication switching systems, in particular telecommunications switching systems, with adhesive couplers
AT281134B
(en )
1970-05-11
Circuit arrangement for telecommunications systems, in particular telephone exchange systems, with sequence control