CA508100A - Electrical signalling systems - Google Patents

Electrical signalling systems

Info

Publication number
CA508100A
CA508100A CA508100A CA508100DA CA508100A CA 508100 A CA508100 A CA 508100A CA 508100 A CA508100 A CA 508100A CA 508100D A CA508100D A CA 508100DA CA 508100 A CA508100 A CA 508100A
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
CA508100A
Other languages
French (fr)
Inventor
Davison Alan
H. Robinson Norman
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 CA508100A publication Critical patent/CA508100A/en
Expired legal-status Critical Current

Links

CA508100A Electrical signalling systems Expired CA508100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA508100T

Publications (1)

Publication Number Publication Date
CA508100A true CA508100A (en) 1954-12-14

Family

ID=35659140

Family Applications (1)

Application Number Title Priority Date Filing Date
CA508100A Expired CA508100A (en) Electrical signalling systems

Country Status (1)

Country Link
CA (1) CA508100A (en)

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