CA438003A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA438003A
CA438003A CA438003A CA438003DA CA438003A CA 438003 A CA438003 A CA 438003A CA 438003 A CA438003 A CA 438003A CA 438003D A CA438003D A CA 438003DA CA 438003 A CA438003 A CA 438003A
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
CA438003A
Other languages
French (fr)
Inventor
Nils Newstedt Harry
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 CA438003A publication Critical patent/CA438003A/en
Expired legal-status Critical Current

Links

CA438003A Telephone system Expired CA438003A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA438003T

Publications (1)

Publication Number Publication Date
CA438003A true CA438003A (en) 1946-11-19

Family

ID=35553238

Family Applications (1)

Application Number Title Priority Date Filing Date
CA438003A Expired CA438003A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA438003A (en)

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