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CA297766A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA297766A
CA297766A CA297766A CA297766DA CA297766A CA 297766 A CA297766 A CA 297766A CA 297766 A CA297766 A CA 297766A CA 297766D A CA297766D A CA 297766DA CA 297766 A CA297766 A CA 297766A
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
CA297766A
Other languages
English (en)
Inventor
Ellis Ostline John
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 CA297766A publication Critical patent/CA297766A/fr
Expired legal-status Critical Current

Links

CA297766A Systeme telephonique Expired CA297766A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA297766T

Publications (1)

Publication Number Publication Date
CA297766A true CA297766A (fr) 1930-02-25

Family

ID=35235086

Family Applications (1)

Application Number Title Priority Date Filing Date
CA297766A Expired CA297766A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA297766A (fr)

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