CA182585A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA182585A
CA182585A CA000182585A CA182585DA CA182585A CA 182585 A CA182585 A CA 182585A CA 000182585 A CA000182585 A CA 000182585A CA 182585D A CA182585D A CA 182585DA CA 182585 A CA182585 A CA 182585A
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
CA000182585A
Other languages
French (fr)
Inventor
Charles L. Goodrum
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 CA182585A publication Critical patent/CA182585A/en
Expired legal-status Critical Current

Links

CA000182585A 1917-02-23 1917-02-23 Telephone exchange system Expired CA182585A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA182585T 1917-02-23

Publications (1)

Publication Number Publication Date
CA182585A true CA182585A (en) 1918-02-26

Family

ID=45302237

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000182585A Expired CA182585A (en) 1917-02-23 1917-02-23 Telephone exchange system

Country Status (1)

Country Link
CA (1) CA182585A (en)

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