CH434385A
(en )
1967-04-30
Telecommunication exchange, in particular telephone exchange
CH483171A
(en )
1969-12-15
Telecommunications system, in particular telephone exchange
AU408924B2
(en )
Line searching network in multistage telecommunication, particularly telephone exchange systems
AU271155B2
(en )
1965-11-11
Multistage crosspoint arrangement for telecommunication, particularly telephone exchange systems
AU292929B2
(en )
1967-01-05
Marker for multistage crosspoint arrangements in telecommunication particularly telephone exchange systems
AU4415664A
(en )
1965-11-11
Multistage crosspoint arrangement for telecommunication, particularly telephone exchange systems
NL159557B
(en )
1979-02-15
TELECOMMUNICATIONS CONNECTION SCHEME, IN PARTICULAR TELEPHONE CONNECTION SYSTEM.
AU6060565A
(en )
1967-01-05
Marker for multistage crosspoint arrangements in telecommunication particularly telephone exchange systems
AU405686B2
(en )
1967-03-23
A speech contact network in telephone systems
AU5736065A
(en )
1966-10-13
Speech contact network in telephone systems
AU6430765A
(en )
1967-03-23
A speech contact network in telephone systems
AU273844B2
(en )
1967-03-23
Call transfer in automatic. telephone exchange
CA765478A
(en )
1967-08-15
Free-route selection network for telephone systems
AU269880B2
(en )
1965-01-28
Test arrangement fora two-stage crosspoint arrangement in telecommunication, particularly telephone systems
AU416485B2
(en )
1966-03-28
Circuit for subscriber identification in telephone or teletype exchanges
CA660857A
(en )
1963-04-09
Subscriber billing in automatic telecommunication exchange systems and the like
CA762037A
(en )
1967-06-27
Telephone dialing systems
AU5054264A
(en )
1967-03-23
Call transfer in automatic. telephone exchange
CA750999A
(en )
1967-01-17
Telephone switching network
CA748510A
(en )
1966-12-13
Telephone switching network
CA748511A
(en )
1966-12-13
Telephone switching network
AU294329B2
(en )
1966-11-17
Asymmetrical direct current key dialling method for telecommunication, particularly telephone systems
CA677709A
(en )
1964-01-07
Telephone exchange systems
AU410393B2
(en )
1967-09-28
Circuit arrangement for telephone exchange installations, particularly for small private branch exchange installations
AU3326363A
(en )
1965-01-28
Test arrangement fora two-stage crosspoint arrangement in telecommunication, particularly telephone systems