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
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
CH445574A
(en )
1967-10-31
Circuit arrangement for telecommunications switching systems, in particular telephone systems with switching fields
CH483766A
(en )
1969-12-31
Circuit arrangement for telecommunications, in particular telephone systems, with multi-stable distribution devices
AT257701B
(en )
1967-10-25
Circuit arrangement for telecommunication, in particular telephone systems with two-way connections
AT290632B
(en )
1971-06-11
Circuit arrangement for telecommunications systems, in particular telephone switching systems, with individual and shared devices
AT273241B
(en )
1969-08-11
Circuit arrangement for telecommunications systems, in particular telephone switching systems, with central and individual devices
AT278108B
(en )
1970-01-26
Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with switching switching devices designed for two-wire through-connections
AT281128B
(en )
1970-05-11
Circuit arrangement for telecommunications switching systems, in particular telephone branch exchange systems
AT273242B
(en )
1969-08-11
Circuit arrangement for telecommunications systems, in particular telephone switching systems, with individual and shared devices
AT284966B
(en )
1970-10-12
Circuit arrangement for power supply for telecommunication systems, in particular telephone systems
AT266227B
(en )
1968-11-11
Circuit arrangement for centrally controlled telecommunication systems, in particular telephone systems, with two-way connections
AT283460B
(en )
1970-08-10
Circuit arrangement for telecommunications systems, in particular telephone exchange systems with central and individual devices
AT301631B
(en )
1972-09-11
Circuit arrangement for charge meters at stations in telecommunications, in particular telephone systems
AT290631B
(en )
1971-06-11
Circuit arrangement for telecommunication, in particular telephone systems with multi-stage coupling devices
CH521667A
(en )
1972-04-15
Circuit arrangement for telecommunications systems, in particular telephone exchanges, with cross-field control devices
CH450497A
(en )
1968-01-31
Circuit arrangement for telecommunications, in particular telephone systems, with central billing
AT274053B
(en )
1969-09-10
Circuit arrangement for telecommunications, in particular telephone systems
AT278914B
(en )
1970-02-25
Circuit arrangement for subscriber stations with keypad selection in telecommunications, in particular telephone systems
AT259635B
(en )
1968-01-25
Circuit arrangement for telecommunication systems, in particular telephone branch exchange systems with memories
AT290633B
(en )
1971-06-11
Circuit arrangement for telecommunication switching systems, in particular telephone switching systems
CH426948A
(en )
1966-12-31
Circuit arrangement for telecommunication, in particular telephone systems with marked adjustable selectors