CA380049A - Signalling supervisory system - Google Patents

Signalling supervisory system

Info

Publication number
CA380049A
CA380049A CA380049A CA380049DA CA380049A CA 380049 A CA380049 A CA 380049A CA 380049 A CA380049 A CA 380049A CA 380049D A CA380049D A CA 380049DA CA 380049 A CA380049 A CA 380049A
Authority
CA
Canada
Prior art keywords
signalling
supervisory system
supervisory
signalling supervisory
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
CA380049A
Other languages
French (fr)
Inventor
P. Boswau Hans
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.)
NORTH ELECTRIC MANUFACTURING Co
Original Assignee
NORTH ELECTRIC MANUFACTURING Co
Publication date
Application granted granted Critical
Publication of CA380049A publication Critical patent/CA380049A/en
Expired legal-status Critical Current

Links

CA380049A Signalling supervisory system Expired CA380049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA380049T

Publications (1)

Publication Number Publication Date
CA380049A true CA380049A (en) 1939-03-14

Family

ID=35384375

Family Applications (1)

Application Number Title Priority Date Filing Date
CA380049A Expired CA380049A (en) Signalling supervisory system

Country Status (1)

Country Link
CA (1) CA380049A (en)

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