CA280020A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA280020A
CA280020A CA280020A CA280020DA CA280020A CA 280020 A CA280020 A CA 280020A CA 280020 A CA280020 A CA 280020A CA 280020D A CA280020D A CA 280020DA CA 280020 A CA280020 A CA 280020A
Authority
CA
Canada
Prior art keywords
telephone system
telephone
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
CA280020A
Other languages
French (fr)
Inventor
L. Nelson Martin
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 CA280020A publication Critical patent/CA280020A/en
Expired legal-status Critical Current

Links

CA280020A Telephone system Expired CA280020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA280020T

Publications (1)

Publication Number Publication Date
CA280020A true CA280020A (en) 1928-05-08

Family

ID=35213112

Family Applications (1)

Application Number Title Priority Date Filing Date
CA280020A Expired CA280020A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA280020A (en)

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