CA574965A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA574965A
CA574965A CA574965A CA574965DA CA574965A CA 574965 A CA574965 A CA 574965A CA 574965 A CA574965 A CA 574965A CA 574965D A CA574965D A CA 574965DA CA 574965 A CA574965 A CA 574965A
Authority
CA
Canada
Prior art keywords
telephone systems
telephone
systems
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
CA574965A
Other languages
French (fr)
Inventor
A. Gulbrandsen Christian
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.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA574965A publication Critical patent/CA574965A/en
Expired legal-status Critical Current

Links

CA574965A Telephone systems Expired CA574965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA574965T

Publications (1)

Publication Number Publication Date
CA574965A true CA574965A (en) 1959-04-28

Family

ID=35750820

Family Applications (1)

Application Number Title Priority Date Filing Date
CA574965A Expired CA574965A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA574965A (en)

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