CA226470A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA226470A
CA226470A CA226470A CA226470DA CA226470A CA 226470 A CA226470 A CA 226470A CA 226470 A CA226470 A CA 226470A CA 226470D A CA226470D A CA 226470DA CA 226470 A CA226470 A CA 226470A
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
CA226470A
Other languages
French (fr)
Inventor
Samuel B. Williams, Jr.
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
Original Assignee
INTERNATIONAL WESTERN ELECTRIC Co
Publication date
Application granted granted Critical
Publication of CA226470A publication Critical patent/CA226470A/en
Expired legal-status Critical Current

Links

CA226470A Telephone exchange system Expired CA226470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA226470T

Publications (1)

Publication Number Publication Date
CA226470A true CA226470A (en) 1922-11-21

Family

ID=35122073

Family Applications (1)

Application Number Title Priority Date Filing Date
CA226470A Expired CA226470A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA226470A (en)

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