CA339280A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA339280A
CA339280A CA339280A CA339280DA CA339280A CA 339280 A CA339280 A CA 339280A CA 339280 A CA339280 A CA 339280A CA 339280D A CA339280D A CA 339280DA CA 339280 A CA339280 A CA 339280A
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
CA339280A
Other languages
French (fr)
Inventor
Hovland Henry
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 CA339280A publication Critical patent/CA339280A/en
Expired legal-status Critical Current

Links

CA339280A Telephone exchange system Expired CA339280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA339280T

Publications (1)

Publication Number Publication Date
CA339280A true CA339280A (en) 1934-02-06

Family

ID=35302421

Family Applications (1)

Application Number Title Priority Date Filing Date
CA339280A Expired CA339280A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA339280A (en)

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