AU104802B2
(en )
1938-08-25
Improvements in or relating to electric signalling or control systems
AU354337A
(en )
1938-08-25
Improvements in or relating to electric signalling or control systems
AU104122B2
(en )
1938-06-16
Improvements in or relating to electric signalling systems
AU103972B2
(en )
1938-05-26
Improvements in or relating to electric control systems
AU225437A
(en )
1938-06-16
Improvements in or relating to electric signalling systems
AU248637A
(en )
1938-05-26
Improvements in or relating to electric control systems
AU103168B2
(en )
1938-02-17
Improvements in or relating to traffic control systems
GB505374A
(en )
1939-05-10
Improvements in or relating to electric motor control systems
AU72237A
(en )
1938-02-17
Improvements in or relating to traffic control systems
AU109967B2
(en )
1940-03-14
Improvements in or relating to electric signalling systems
AU111756B2
(en )
1939-04-09
Improvements in or relating to electric signalling systems
AU112258B2
(en )
1941-01-09
Improvements in or relating to electric signalling systems
AU103212B2
(en )
1938-02-24
Improvements in or relating to alternating current signalling systems
AU106387B2
(en )
1939-01-26
Improvements in electrical signalling systems
AU100398B2
(en )
1937-03-11
Improvements in or relating to electric signalling systems
AU156039A
(en )
1939-04-09
Improvements in or relating to electric signalling systems
AU572839A
(en )
1941-01-09
Improvements in or relating to electric signalling systems
AU70239A
(en )
1940-02-29
Improvements in or relating to electric signalling systems
AU97439A
(en )
1940-03-14
Improvements in or relating to electric signalling systems
AU55337A
(en )
1938-02-24
Improvements in or relating to alternating current signalling systems
AU102121B2
(en )
1937-10-07
Improvements in or relating to electrical signalling systems
AU102152B2
(en )
1937-10-14
Improvements in or relating to electrical signalling systems
AU106687B2
(en )
1939-03-02
Improvements in or relating to electrical communication systems
AU107516B2
(en )
1939-06-08
Improvements in or relating to electric signalling systems
AU108197B2
(en )
1939-08-17
Improvements in or relating to electric signalling systems