CA755194A - Electric signalling systems - Google Patents

Electric signalling systems

Info

Publication number
CA755194A
CA755194A CA755194A CA755194DA CA755194A CA 755194 A CA755194 A CA 755194A CA 755194 A CA755194 A CA 755194A CA 755194D A CA755194D A CA 755194DA CA 755194 A CA755194 A CA 755194A
Authority
CA
Canada
Prior art keywords
signalling systems
electric signalling
electric
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
CA755194A
Inventor
C. Emerson 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.)
International Telephone and Telegraph Corp
Original Assignee
International Telephone and Telegraph Corp
Publication date
Application granted granted Critical
Publication of CA755194A publication Critical patent/CA755194A/en
Expired legal-status Critical Current

Links

CA755194A Electric signalling systems Expired CA755194A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA755194T

Publications (1)

Publication Number Publication Date
CA755194A true CA755194A (en) 1967-03-21

Family

ID=36189533

Family Applications (1)

Application Number Title Priority Date Filing Date
CA755194A Expired CA755194A (en) Electric signalling systems

Country Status (1)

Country Link
CA (1) CA755194A (en)

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