CA289971A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA289971A
CA289971A CA289971A CA289971DA CA289971A CA 289971 A CA289971 A CA 289971A CA 289971 A CA289971 A CA 289971A CA 289971D A CA289971D A CA 289971DA CA 289971 A CA289971 A CA 289971A
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
CA289971A
Other languages
English (en)
Inventor
Oglesby Passmore William
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA289971A publication Critical patent/CA289971A/fr
Expired legal-status Critical Current

Links

CA289971A Systeme telephonique Expired CA289971A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA289971T

Publications (1)

Publication Number Publication Date
CA289971A true CA289971A (fr) 1929-05-28

Family

ID=35226783

Family Applications (1)

Application Number Title Priority Date Filing Date
CA289971A Expired CA289971A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA289971A (fr)

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