CA196185A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA196185A
CA196185A CA196185A CA196185DA CA196185A CA 196185 A CA196185 A CA 196185A CA 196185 A CA196185 A CA 196185A CA 196185D A CA196185D A CA 196185DA CA 196185 A CA196185 A CA 196185A
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
CA196185A
Other languages
French (fr)
Inventor
Deakin Gerald
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA196185A publication Critical patent/CA196185A/en
Expired legal-status Critical Current

Links

CA196185A Telephone exchange system Expired CA196185A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA196185T

Publications (1)

Publication Number Publication Date
CA196185A true CA196185A (en) 1920-01-13

Family

ID=35065493

Family Applications (1)

Application Number Title Priority Date Filing Date
CA196185A Expired CA196185A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA196185A (en)

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