CA478947A - Electric signalling systems - Google Patents

Electric signalling systems

Info

Publication number
CA478947A
CA478947A CA478947A CA478947DA CA478947A CA 478947 A CA478947 A CA 478947A CA 478947 A CA478947 A CA 478947A CA 478947D A CA478947D A CA 478947DA CA 478947 A CA478947 A CA 478947A
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
CA478947A
Other languages
French (fr)
Inventor
Malcolm Swift Mcwhirter Eric
Harris Dunn Roland
William Lennox Peter
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 CA478947A publication Critical patent/CA478947A/en
Expired legal-status Critical Current

Links

CA478947A Electric signalling systems Expired CA478947A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA478947T

Publications (1)

Publication Number Publication Date
CA478947A true CA478947A (en) 1951-11-27

Family

ID=35618610

Family Applications (1)

Application Number Title Priority Date Filing Date
CA478947A Expired CA478947A (en) Electric signalling systems

Country Status (1)

Country Link
CA (1) CA478947A (en)

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