CA314288A - Systeme de central de telephone a compteurs des zones - Google Patents

Systeme de central de telephone a compteurs des zones

Info

Publication number
CA314288A
CA314288A CA314288A CA314288DA CA314288A CA 314288 A CA314288 A CA 314288A CA 314288 A CA314288 A CA 314288A CA 314288D A CA314288D A CA 314288DA CA 314288 A CA314288 A CA 314288A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
zone metering
metering telephone
zone
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
CA314288A
Other languages
English (en)
Inventor
Jean Rousseau Ernest
Devriendt Charles
Hatton William
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA314288A publication Critical patent/CA314288A/fr
Expired legal-status Critical Current

Links

CA314288A Systeme de central de telephone a compteurs des zones Expired CA314288A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA314288T

Publications (1)

Publication Number Publication Date
CA314288A true CA314288A (fr) 1931-08-11

Family

ID=35273616

Family Applications (1)

Application Number Title Priority Date Filing Date
CA314288A Expired CA314288A (fr) Systeme de central de telephone a compteurs des zones

Country Status (1)

Country Link
CA (1) CA314288A (fr)

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