AU141347B2
(en )
1948-04-08
Improvements in telephone switching and signalling systems
AU1092547A
(en )
1948-04-08
Improvements in telephone switching and signalling systems
AU140956B2
(en )
1948-01-22
Improvements in telephone signalling systems
AU1016447A
(en )
1948-01-22
Improvements in telephone signalling systems
AU123238B2
(en )
1947-01-23
Improvements in telephone or like signalling systems
CA440020A
(en )
1947-03-04
Telephone switch and system
AU1476544A
(en )
1947-01-23
Improvements in telephone or like signalling systems
AU139731B2
(en )
1948-05-27
Improvements in telephone systems
AU140365B2
(en )
1947-07-03
Improvements in or relating to signalling in telephone systems
AU1297347A
(en )
1948-05-27
Improvements in telephone systems
AU141963B2
(en )
1947-07-10
Improvements in or relating to telecommunication switching systems
AU137141B2
(en )
1950-05-08
Improvements in automatic switches for use in telephone or like systems
AU1257047A
(en )
1947-07-03
Improvements in or relating to signalling in telephone systems
AU140425B2
(en )
1947-10-09
Improvements in electric signalling systems
AU141970B2
(en )
1948-12-02
Improvements in intercommunication telephone systems
AU139605B2
(en )
1948-04-22
Improvements in carrier telephone systems
AU1279747A
(en )
1947-07-10
Improvements in or relating to telecommunication switching systems
CA443406A
(en )
1947-08-05
Telephone signalling system
AU1290547A
(en )
1950-05-08
Improvements in automatic switches for use in telephone or like systems
AU137670B2
(en )
1950-06-26
Improvements in telephone systems employing crossbar switches
AU143291B2
(en )
1947-07-31
Improvements in or relating to toll telecommunication switching systems
AU138852B2
(en )
1950-08-10
Improvements In or relating in automatic switches suitable for use in telephone or like systems
AU138953B2
(en )
1947-11-13
Improvements relating to telephone and like selective systems
AU134438B2
(en )
1946-07-01
Improvements in or relating to switching devices for use in telephone and like systems
AU137524B2
(en )
1947-08-28
Improvements relating to automatic switches ofthe kind used in telephone systems