CA443721A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA443721A
CA443721A CA443721A CA443721DA CA443721A CA 443721 A CA443721 A CA 443721A CA 443721 A CA443721 A CA 443721A CA 443721D A CA443721D A CA 443721DA CA 443721 A CA443721 A CA 443721A
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
CA443721A
Other languages
English (en)
Inventor
E. Ostline John
Original Assignee
Automatic Electric Laboratories Inc
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA443721A publication Critical patent/CA443721A/fr
Expired legal-status Critical Current

Links

CA443721A Systeme telephonique Expired CA443721A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA443721T

Publications (1)

Publication Number Publication Date
CA443721A true CA443721A (fr) 1947-08-19

Family

ID=35558947

Family Applications (1)

Application Number Title Priority Date Filing Date
CA443721A Expired CA443721A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA443721A (fr)

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