CA215082A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA215082A
CA215082A CA215082A CA215082DA CA215082A CA 215082 A CA215082 A CA 215082A CA 215082 A CA215082 A CA 215082A CA 215082D A CA215082D A CA 215082DA CA 215082 A CA215082 A CA 215082A
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
CA215082A
Other languages
French (fr)
Inventor
Stokely Ray
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 CA215082A publication Critical patent/CA215082A/en
Expired legal-status Critical Current

Links

CA215082A Telephone exchange system Expired CA215082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA215082T

Publications (1)

Publication Number Publication Date
CA215082A true CA215082A (en) 1922-01-10

Family

ID=35109526

Family Applications (1)

Application Number Title Priority Date Filing Date
CA215082A Expired CA215082A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA215082A (en)

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