CA512084A - Systemes telephoniques de commutation d'appels entre bureaux - Google Patents

Systemes telephoniques de commutation d'appels entre bureaux

Info

Publication number
CA512084A
CA512084A CA512084A CA512084DA CA512084A CA 512084 A CA512084 A CA 512084A CA 512084 A CA512084 A CA 512084A CA 512084D A CA512084D A CA 512084DA CA 512084 A CA512084 A CA 512084A
Authority
CA
Canada
Prior art keywords
telephone systems
switching telephone
toll switching
office
office toll
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
CA512084A
Other languages
English (en)
Inventor
W. Balzer Harvey
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA512084A publication Critical patent/CA512084A/fr
Expired legal-status Critical Current

Links

CA512084A Systemes telephoniques de commutation d'appels entre bureaux Expired CA512084A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA512084T

Publications (1)

Publication Number Publication Date
CA512084A true CA512084A (fr) 1955-04-19

Family

ID=35663156

Family Applications (1)

Application Number Title Priority Date Filing Date
CA512084A Expired CA512084A (fr) Systemes telephoniques de commutation d'appels entre bureaux

Country Status (1)

Country Link
CA (1) CA512084A (fr)

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