CA790121A - Electrical signalling systems - Google Patents

Electrical signalling systems

Info

Publication number
CA790121A
CA790121A CA790121A CA790121DA CA790121A CA 790121 A CA790121 A CA 790121A CA 790121 A CA790121 A CA 790121A CA 790121D A CA790121D A CA 790121DA CA 790121 A CA790121 A CA 790121A
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
CA790121A
Inventor
H. I. Lakhani Azizuddin
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 CA790121A publication Critical patent/CA790121A/en
Expired legal-status Critical Current

Links

CA790121A Electrical signalling systems Expired CA790121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA790121T

Publications (1)

Publication Number Publication Date
CA790121A true CA790121A (en) 1968-07-16

Family

ID=36254092

Family Applications (1)

Application Number Title Priority Date Filing Date
CA790121A Expired CA790121A (en) Electrical signalling systems

Country Status (1)

Country Link
CA (1) CA790121A (en)

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