CA346417A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA346417A
CA346417A CA346417A CA346417DA CA346417A CA 346417 A CA346417 A CA 346417A CA 346417 A CA346417 A CA 346417A CA 346417D A CA346417D A CA 346417DA CA 346417 A CA346417 A CA 346417A
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
CA346417A
Other languages
French (fr)
Inventor
William Harper Robert
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 CA346417A publication Critical patent/CA346417A/en
Expired legal-status Critical Current

Links

CA346417A Telephone exchange system Expired CA346417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA346417T

Publications (1)

Publication Number Publication Date
CA346417A true CA346417A (en) 1934-11-27

Family

ID=35317691

Family Applications (1)

Application Number Title Priority Date Filing Date
CA346417A Expired CA346417A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA346417A (en)

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