CA434306A - Electrical signalling system - Google Patents

Electrical signalling system

Info

Publication number
CA434306A
CA434306A CA434306A CA434306DA CA434306A CA 434306 A CA434306 A CA 434306A CA 434306 A CA434306 A CA 434306A CA 434306D A CA434306D A CA 434306DA CA 434306 A CA434306 A CA 434306A
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
CA434306A
Other languages
French (fr)
Inventor
Francis 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 CA434306A publication Critical patent/CA434306A/en
Expired legal-status Critical Current

Links

CA434306A Electrical signalling system Expired CA434306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA434306T

Publications (1)

Publication Number Publication Date
CA434306A true CA434306A (en) 1946-04-23

Family

ID=35548934

Family Applications (1)

Application Number Title Priority Date Filing Date
CA434306A Expired CA434306A (en) Electrical signalling system

Country Status (1)

Country Link
CA (1) CA434306A (en)

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