CA174222A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA174222A
CA174222A CA000174222A CA174222DA CA174222A CA 174222 A CA174222 A CA 174222A CA 000174222 A CA000174222 A CA 000174222A CA 174222D A CA174222D A CA 174222DA CA 174222 A CA174222 A CA 174222A
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
CA000174222A
Other languages
English (en)
Inventor
Kenneth Simonds Johnson
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 CA174222A publication Critical patent/CA174222A/fr
Expired legal-status Critical Current

Links

CA000174222A 1915-11-20 1915-11-20 Systeme telephonique Expired CA174222A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA174222T 1915-11-20

Publications (1)

Publication Number Publication Date
CA174222A true CA174222A (fr) 1916-12-26

Family

ID=45293875

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000174222A Expired CA174222A (fr) 1915-11-20 1915-11-20 Systeme telephonique

Country Status (1)

Country Link
CA (1) CA174222A (fr)

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