CA209110A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA209110A
CA209110A CA209110A CA209110DA CA209110A CA 209110 A CA209110 A CA 209110A CA 209110 A CA209110 A CA 209110A CA 209110D A CA209110D A CA 209110DA CA 209110 A CA209110 A CA 209110A
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
CA209110A
Other languages
French (fr)
Inventor
Polinsky Lipa
H. Mathies 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.)
INTERNATIONAL WESTERN ELECTRIC CO
Original Assignee
INTERNATIONAL WESTERN ELECTRIC CO
Publication date
Application granted granted Critical
Publication of CA209110A publication Critical patent/CA209110A/en
Expired legal-status Critical Current

Links

CA209110A Telephone exchange system Expired CA209110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA209110T

Publications (1)

Publication Number Publication Date
CA209110A true CA209110A (en) 1921-03-01

Family

ID=35102889

Family Applications (1)

Application Number Title Priority Date Filing Date
CA209110A Expired CA209110A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA209110A (en)

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