CA443722A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA443722A
CA443722A CA443722A CA443722DA CA443722A CA 443722 A CA443722 A CA 443722A CA 443722 A CA443722 A CA 443722A CA 443722D A CA443722D A CA 443722DA CA 443722 A CA443722 A CA 443722A
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
CA443722A
Other languages
English (en)
Inventor
S. Peterson Edward
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.)
Automatic Electric Laboratories Inc
Associated Telephone and Telegraph Co
Original Assignee
Automatic Electric Laboratories Inc
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA443722A publication Critical patent/CA443722A/fr
Expired legal-status Critical Current

Links

CA443722A Systeme telephonique Expired CA443722A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA443722T

Publications (1)

Publication Number Publication Date
CA443722A true CA443722A (fr) 1947-08-19

Family

ID=35558948

Family Applications (1)

Application Number Title Priority Date Filing Date
CA443722A Expired CA443722A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA443722A (fr)

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