CA446971A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA446971A
CA446971A CA446971A CA446971DA CA446971A CA 446971 A CA446971 A CA 446971A CA 446971 A CA446971 A CA 446971A CA 446971D A CA446971D A CA 446971DA CA 446971 A CA446971 A CA 446971A
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
CA446971A
Other languages
French (fr)
Inventor
W. Jones Roy
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 CA446971A publication Critical patent/CA446971A/en
Expired legal-status Critical Current

Links

CA446971A Telephone system Expired CA446971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA446971T

Publications (1)

Publication Number Publication Date
CA446971A true CA446971A (en) 1948-03-02

Family

ID=35564650

Family Applications (1)

Application Number Title Priority Date Filing Date
CA446971A Expired CA446971A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA446971A (en)

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