CA176352A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA176352A
CA176352A CA000176352A CA176352DA CA176352A CA 176352 A CA176352 A CA 176352A CA 000176352 A CA000176352 A CA 000176352A CA 176352D A CA176352D A CA 176352DA CA 176352 A CA176352 A CA 176352A
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
CA000176352A
Other languages
French (fr)
Inventor
Joseph L. Wright
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA176352A publication Critical patent/CA176352A/en
Expired legal-status Critical Current

Links

CA000176352A 1915-11-15 1915-11-15 Telephone exchange system Expired CA176352A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA176352T 1915-11-15

Publications (1)

Publication Number Publication Date
CA176352A true CA176352A (en) 1917-04-10

Family

ID=45296005

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000176352A Expired CA176352A (en) 1915-11-15 1915-11-15 Telephone exchange system

Country Status (1)

Country Link
CA (1) CA176352A (en)

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