CA508101A - Systemes de signalisation electrique - Google Patents

Systemes de signalisation electrique

Info

Publication number
CA508101A
CA508101A CA508101A CA508101DA CA508101A CA 508101 A CA508101 A CA 508101A CA 508101 A CA508101 A CA 508101A CA 508101D A CA508101D A CA 508101DA CA 508101 A CA508101 A CA 508101A
Authority
CA
Canada
Prior art keywords
signalling systems
electrical signalling
electrical
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
CA508101A
Other languages
English (en)
Inventor
Horrocks Theodore
F. Mackenzie John
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA508101A publication Critical patent/CA508101A/fr
Expired legal-status Critical Current

Links

CA508101A Systemes de signalisation electrique Expired CA508101A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA508101T

Publications (1)

Publication Number Publication Date
CA508101A true CA508101A (fr) 1954-12-14

Family

ID=35659141

Family Applications (1)

Application Number Title Priority Date Filing Date
CA508101A Expired CA508101A (fr) Systemes de signalisation electrique

Country Status (1)

Country Link
CA (1) CA508101A (fr)

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