CA472663A - Electric signalling systems - Google Patents

Electric signalling systems

Info

Publication number
CA472663A
CA472663A CA472663A CA472663DA CA472663A CA 472663 A CA472663 A CA 472663A CA 472663 A CA472663 A CA 472663A CA 472663D A CA472663D A CA 472663DA CA 472663 A CA472663 A CA 472663A
Authority
CA
Canada
Prior art keywords
signalling systems
electric signalling
electric
systems
signalling
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
CA472663A
Other languages
French (fr)
Inventor
Alfred Marshall Thomas
Brown Andrew
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
Publication date
Application granted granted Critical
Publication of CA472663A publication Critical patent/CA472663A/en
Expired legal-status Critical Current

Links

CA472663A Electric signalling systems Expired CA472663A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA472663T

Publications (1)

Publication Number Publication Date
CA472663A true CA472663A (en) 1951-04-03

Family

ID=35606623

Family Applications (1)

Application Number Title Priority Date Filing Date
CA472663A Expired CA472663A (en) Electric signalling systems

Country Status (1)

Country Link
CA (1) CA472663A (en)

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