CA317874A - Systeme telephonique a zones - Google Patents

Systeme telephonique a zones

Info

Publication number
CA317874A
CA317874A CA317874A CA317874DA CA317874A CA 317874 A CA317874 A CA 317874A CA 317874 A CA317874 A CA 317874A CA 317874D A CA317874D A CA 317874DA CA 317874 A CA317874 A CA 317874A
Authority
CA
Canada
Prior art keywords
telephone system
zone metering
metering telephone
zone
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
CA317874A
Other languages
English (en)
Inventor
Wicks 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.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA317874A publication Critical patent/CA317874A/fr
Expired legal-status Critical Current

Links

CA317874A Systeme telephonique a zones Expired CA317874A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA317874T

Publications (1)

Publication Number Publication Date
CA317874A true CA317874A (fr) 1931-12-08

Family

ID=35278430

Family Applications (1)

Application Number Title Priority Date Filing Date
CA317874A Expired CA317874A (fr) Systeme telephonique a zones

Country Status (1)

Country Link
CA (1) CA317874A (fr)

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