CA492291A - Systemes de signalisation electrique - Google Patents

Systemes de signalisation electrique

Info

Publication number
CA492291A
CA492291A CA492291A CA492291DA CA492291A CA 492291 A CA492291 A CA 492291A CA 492291 A CA492291 A CA 492291A CA 492291D A CA492291D A CA 492291DA CA 492291 A CA492291 A CA 492291A
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
CA492291A
Other languages
English (en)
Inventor
Malcolm Swift Mcwhirter Eric
Jennings Ward Hugh
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 CA492291A publication Critical patent/CA492291A/fr
Expired legal-status Critical Current

Links

CA492291A Systemes de signalisation electrique Expired CA492291A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA492291T

Publications (1)

Publication Number Publication Date
CA492291A true CA492291A (fr) 1953-04-21

Family

ID=35637670

Family Applications (1)

Application Number Title Priority Date Filing Date
CA492291A Expired CA492291A (fr) Systemes de signalisation electrique

Country Status (1)

Country Link
CA (1) CA492291A (fr)

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