CA277424A - Systeme de central telephonique - Google Patents

Systeme de central telephonique

Info

Publication number
CA277424A
CA277424A CA277424A CA277424DA CA277424A CA 277424 A CA277424 A CA 277424A CA 277424 A CA277424 A CA 277424A CA 277424D A CA277424D A CA 277424DA CA 277424 A CA277424 A CA 277424A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
telephone
exchange
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
CA277424A
Other languages
English (en)
Inventor
W. Carpenter Warren
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.)
International Western Electric Co Inc
AT&T Inc
Original Assignee
Western Electric Co Inc
International Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA277424A publication Critical patent/CA277424A/fr
Expired legal-status Critical Current

Links

CA277424A Systeme de central telephonique Expired CA277424A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA277424T

Publications (1)

Publication Number Publication Date
CA277424A true CA277424A (fr) 1928-01-24

Family

ID=35210515

Family Applications (1)

Application Number Title Priority Date Filing Date
CA277424A Expired CA277424A (fr) Systeme de central telephonique

Country Status (1)

Country Link
CA (1) CA277424A (fr)

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