CA773716A - Electrical signalling systems - Google Patents

Electrical signalling systems

Info

Publication number
CA773716A
CA773716A CA773716A CA773716DA CA773716A CA 773716 A CA773716 A CA 773716A CA 773716 A CA773716 A CA 773716A CA 773716D A CA773716D A CA 773716DA CA 773716 A CA773716 A CA 773716A
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
CA773716A
Inventor
P. Clark Adrian
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
Publication date
Application granted granted Critical
Publication of CA773716A publication Critical patent/CA773716A/en
Expired legal-status Critical Current

Links

CA773716A Electrical signalling systems Expired CA773716A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA773716T

Publications (1)

Publication Number Publication Date
CA773716A true CA773716A (en) 1967-12-12

Family

ID=36220999

Family Applications (1)

Application Number Title Priority Date Filing Date
CA773716A Expired CA773716A (en) Electrical signalling systems

Country Status (1)

Country Link
CA (1) CA773716A (en)

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