MY6200029A
(en )
1962-12-31
Improvements in automatic electric switching systems such as automatic telephone exchanges
AU223529B2
(en )
1957-08-29
Improvements in automatic electric switching systems such as automatic telephone exchanges
US2946844A
(en )
1960-07-26
Automatic telegraph switching system
AU2567957A
(en )
1957-08-29
Improvements in automatic electric switching systems such as automatic telephone exchanges
AU215124B2
(en )
1957-04-04
Improvements in automatic telephone exchanges
AU2202356A
(en )
1957-04-04
Improvements in automatic telephone exchanges
AU234799B2
(en )
1959-05-21
Improvements in party-line arrangements for automatic telephone switching systems
AU251741B2
(en )
1960-12-08
Improvements in or relating to automatic telephone exchanges
AU250436B2
(en )
1962-09-27
Improvements in or relating to automatic telecommunication exchanges
CA534838A
(en )
1956-12-25
Automatic telephone exchanges
AU4343358A
(en )
1959-05-21
Improvements in party-line arrangements for automatic telephone switching systems
CA636285A
(en )
1962-02-13
Automatic electric switching systems such as automatic telephone exchanges
AU6126260A
(en )
1960-12-08
Improvements in or relating to automatic telephone exchanges
AU6482760A
(en )
1962-09-27
Improvements in or relating to automatic telecommunication exchanges
AU224167B2
(en )
1958-04-17
Improvements in trunking arrangements for telephone exchanges employing electronic switching devices
AU209008B2
(en )
1956-07-26
Switching systems applicable particularly to group selection in automatic telephony systems
CA533784A
(en )
1956-11-27
Subscribers line circuits in telecommunication systems
AU234339B2
(en )
1960-02-11
Improvements relating to automatic selecting switches as used in automatic telephone systems
CA543974A
(en )
1957-07-23
Automatic telephone switching system
AU3197457A
(en )
1958-04-17
Improvements in trunking arrangements for telephone exchanges employing electronic switching devices
AU245516B2
(en )
1960-06-30
Improvements relating to automatic telecommunication switching systems
AU242679B2
(en )
1960-07-07
Improvements relating to automatic telecommunication switching systems
AU245712B2
(en )
1960-06-23
Improvements relating to automatic telecommunication switching systems
AU246886B2
(en )
1960-06-23
Improvements relating to automatic telecommunication switching systems
CA531988A
(en )
1956-10-23
Electrical switching system