CA476493A - Control or signalling systems - Google Patents

Control or signalling systems

Info

Publication number
CA476493A
CA476493A CA476493A CA476493DA CA476493A CA 476493 A CA476493 A CA 476493A CA 476493 A CA476493 A CA 476493A CA 476493D A CA476493D A CA 476493DA CA 476493 A CA476493 A CA 476493A
Authority
CA
Canada
Prior art keywords
control
signalling systems
signalling
systems
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
CA476493A
Other languages
French (fr)
Inventor
Pierre Gohorel Fernand
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 CA476493A publication Critical patent/CA476493A/en
Expired legal-status Critical Current

Links

CA476493A Control or signalling systems Expired CA476493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA476493T

Publications (1)

Publication Number Publication Date
CA476493A true CA476493A (en) 1951-08-28

Family

ID=35616123

Family Applications (1)

Application Number Title Priority Date Filing Date
CA476493A Expired CA476493A (en) Control or signalling systems

Country Status (1)

Country Link
CA (1) CA476493A (en)

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