CA430764A - Electrical signalling system - Google Patents

Electrical signalling system

Info

Publication number
CA430764A
CA430764A CA430764A CA430764DA CA430764A CA 430764 A CA430764 A CA 430764A CA 430764 A CA430764 A CA 430764A CA 430764D A CA430764D A CA 430764DA CA 430764 A CA430764 A CA 430764A
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
CA430764A
Other languages
French (fr)
Inventor
Norton Roseby Philip
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 CA430764A publication Critical patent/CA430764A/en
Expired legal-status Critical Current

Links

CA430764A Electrical signalling system Expired CA430764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA430764T

Publications (1)

Publication Number Publication Date
CA430764A true CA430764A (en) 1945-10-23

Family

ID=35545793

Family Applications (1)

Application Number Title Priority Date Filing Date
CA430764A Expired CA430764A (en) Electrical signalling system

Country Status (1)

Country Link
CA (1) CA430764A (en)

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