CA349482A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA349482A
CA349482A CA349482A CA349482DA CA349482A CA 349482 A CA349482 A CA 349482A CA 349482 A CA349482 A CA 349482A CA 349482D A CA349482D A CA 349482DA CA 349482 A CA349482 A CA 349482A
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
CA349482A
Other languages
French (fr)
Inventor
Howard Henry Israel
Emerson Hersey Ralph
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 CA349482A publication Critical patent/CA349482A/en
Expired legal-status Critical Current

Links

CA349482A Telephone exchange system Expired CA349482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA349482T

Publications (1)

Publication Number Publication Date
CA349482A true CA349482A (en) 1935-04-09

Family

ID=35337445

Family Applications (1)

Application Number Title Priority Date Filing Date
CA349482A Expired CA349482A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA349482A (en)

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