CA338906A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA338906A
CA338906A CA338906A CA338906DA CA338906A CA 338906 A CA338906 A CA 338906A CA 338906 A CA338906 A CA 338906A CA 338906D A CA338906D A CA 338906DA CA 338906 A CA338906 A CA 338906A
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
CA338906A
Other languages
French (fr)
Inventor
Everett Collis Raymond
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 CA338906A publication Critical patent/CA338906A/en
Expired legal-status Critical Current

Links

CA338906A Telephone exchange system Expired CA338906A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA338906T

Publications (1)

Publication Number Publication Date
CA338906A true CA338906A (en) 1934-01-23

Family

ID=35302047

Family Applications (1)

Application Number Title Priority Date Filing Date
CA338906A Expired CA338906A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA338906A (en)

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