AU100433B2
(en )
1937-03-31
Improvements relating to railway track circuit apparatus
AU245236A
(en )
1937-03-31
Improvements relating to railway track circuit apparatus
CA357629A
(en )
1936-05-05
Railway track circuit
AU103247B2
(en )
1938-02-24
Improvements relating to railway signalling apparatus
AU2120035A
(en )
1936-02-13
Improvements relating to track circuit signalling apparatus for railways andthe like
CA365484A
(en )
1937-04-20
Railway track circuit apparatus
CA365835A
(en )
1937-05-04
Railway track circuit apparatus
AU15137A
(en )
1938-02-24
Improvements relating to railway signalling apparatus
CA355235A
(en )
1936-01-07
Railway switch apparatus
CA360403A
(en )
1936-09-08
Railway switch apparatus
CA332545A
(en )
1933-05-16
Railway track circuit
CA362882A
(en )
1936-12-22
Signal for railway crossings
CA362881A
(en )
1936-12-22
Signal for railway crossings
CA368819A
(en )
1937-09-21
Railway track circuit
CA365988A
(en )
1937-05-11
Railway track circuit
CA365987A
(en )
1937-05-11
Railway track circuit
CA370672A
(en )
1937-12-21
Railway track circuit
CA360179A
(en )
1936-09-01
Pad for toy train tracks
CA367090A
(en )
1937-06-29
Railway track torpedo
CA343394A
(en )
1934-07-24
Railway track circuit
AU103426B2
(en )
1938-03-24
An improved railway rail joint
CA333837A
(en )
1933-07-04
Railway track
AU101588B2
(en )
1937-07-22
Improvements relating to railway traffic controlling apparatus
AU2487635A
(en )
1936-07-09
Track circuits for railways
CA369839A
(en )
1937-11-09
Railway signaling apparatus