CA190057A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA190057A
CA190057A CA000190057A CA190057DA CA190057A CA 190057 A CA190057 A CA 190057A CA 000190057 A CA000190057 A CA 000190057A CA 190057D A CA190057D A CA 190057DA CA 190057 A CA190057 A CA 190057A
Authority
CA
Canada
Prior art keywords
telephone system
telephone
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
CA000190057A
Other languages
French (fr)
Inventor
Charles L. Goodrum
James L. Mcquarrie
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 CA190057A publication Critical patent/CA190057A/en
Expired legal-status Critical Current

Links

CA000190057A 1918-03-19 1918-03-19 Telephone system Expired CA190057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA190057T 1918-03-19

Publications (1)

Publication Number Publication Date
CA190057A true CA190057A (en) 1919-04-29

Family

ID=45309708

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000190057A Expired CA190057A (en) 1918-03-19 1918-03-19 Telephone system

Country Status (1)

Country Link
CA (1) CA190057A (en)

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