CA420335A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA420335A
CA420335A CA420335A CA420335DA CA420335A CA 420335 A CA420335 A CA 420335A CA 420335 A CA420335 A CA 420335A CA 420335D A CA420335D A CA 420335DA CA 420335 A CA420335 A CA 420335A
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
CA420335A
Other languages
French (fr)
Inventor
Ernest Lomax Clarence
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 CA420335A publication Critical patent/CA420335A/en
Expired legal-status Critical Current

Links

CA420335A Telephone system Expired CA420335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA420335T

Publications (1)

Publication Number Publication Date
CA420335A true CA420335A (en) 1944-05-23

Family

ID=35531261

Family Applications (1)

Application Number Title Priority Date Filing Date
CA420335A Expired CA420335A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA420335A (en)

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