CA524594A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA524594A
CA524594A CA524594A CA524594DA CA524594A CA 524594 A CA524594 A CA 524594A CA 524594 A CA524594 A CA 524594A CA 524594D A CA524594D A CA 524594DA CA 524594 A CA524594 A CA 524594A
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
CA524594A
Other languages
French (fr)
Inventor
B. Mitchell Len
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 CA524594A publication Critical patent/CA524594A/en
Expired legal-status Critical Current

Links

CA524594A Telephone systems Expired CA524594A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA524594T

Publications (1)

Publication Number Publication Date
CA524594A true CA524594A (en) 1956-05-01

Family

ID=35678306

Family Applications (1)

Application Number Title Priority Date Filing Date
CA524594A Expired CA524594A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA524594A (en)

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