CA415427A - Electrical signalling system - Google Patents

Electrical signalling system

Info

Publication number
CA415427A
CA415427A CA415427A CA415427DA CA415427A CA 415427 A CA415427 A CA 415427A CA 415427 A CA415427 A CA 415427A CA 415427D A CA415427D A CA 415427DA CA 415427 A CA415427 A CA 415427A
Authority
CA
Canada
Prior art keywords
signalling system
electrical signalling
electrical
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
CA415427A
Other languages
French (fr)
Inventor
Bertram Ireland Eric
Wyn Jones Eric
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 CA415427A publication Critical patent/CA415427A/en
Expired legal-status Critical Current

Links

CA415427A Electrical signalling system Expired CA415427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA415427T

Publications (1)

Publication Number Publication Date
CA415427A true CA415427A (en) 1943-09-28

Family

ID=35524637

Family Applications (1)

Application Number Title Priority Date Filing Date
CA415427A Expired CA415427A (en) Electrical signalling system

Country Status (1)

Country Link
CA (1) CA415427A (en)

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