AU502975B2 - Railway signal system - Google Patents

Railway signal system

Info

Publication number
AU502975B2
AU502975B2 AU79903/75A AU7990375A AU502975B2 AU 502975 B2 AU502975 B2 AU 502975B2 AU 79903/75 A AU79903/75 A AU 79903/75A AU 7990375 A AU7990375 A AU 7990375A AU 502975 B2 AU502975 B2 AU 502975B2
Authority
AU
Australia
Prior art keywords
signal system
railway signal
railway
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU79903/75A
Other versions
AU7990375A (en
Inventor
W. L Geiger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HARMON INDUSTRIES Inc
Original Assignee
HARMON INDUSTRIES
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US458172A external-priority patent/US3929307A/en
Application filed by HARMON INDUSTRIES filed Critical HARMON INDUSTRIES
Publication of AU7990375A publication Critical patent/AU7990375A/en
Application granted granted Critical
Publication of AU502975B2 publication Critical patent/AU502975B2/en
Expired legal-status Critical Current

Links

AU79903/75A 1974-04-05 1975-04-07 Railway signal system Expired AU502975B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US458172A US3929307A (en) 1973-04-09 1974-04-05 Railway signal system with speed determined movement detector
USUS458172 1974-04-05

Publications (2)

Publication Number Publication Date
AU7990375A AU7990375A (en) 1976-10-14
AU502975B2 true AU502975B2 (en) 1979-08-16

Family

ID=23819669

Family Applications (1)

Application Number Title Priority Date Filing Date
AU79903/75A Expired AU502975B2 (en) 1974-04-05 1975-04-07 Railway signal system

Country Status (2)

Country Link
AU (1) AU502975B2 (en)
CA (1) CA1033446A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU595614B2 (en) * 1986-06-13 1990-04-05 Aea Technology Plc Train communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU595614B2 (en) * 1986-06-13 1990-04-05 Aea Technology Plc Train communication system

Also Published As

Publication number Publication date
AU7990375A (en) 1976-10-14
CA1033446A (en) 1978-06-20

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