CA420570A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA420570A
CA420570A CA420570A CA420570DA CA420570A CA 420570 A CA420570 A CA 420570A CA 420570 A CA420570 A CA 420570A CA 420570D A CA420570D A CA 420570DA CA 420570 A CA420570 A CA 420570A
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
CA420570A
Other languages
French (fr)
Inventor
Allmen Lundstrom Alexis
Hecht George
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Bell Telephone Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA420570A publication Critical patent/CA420570A/en
Expired legal-status Critical Current

Links

CA420570A Telephone system Expired CA420570A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA420570T

Publications (1)

Publication Number Publication Date
CA420570A true CA420570A (en) 1944-05-30

Family

ID=35531502

Family Applications (1)

Application Number Title Priority Date Filing Date
CA420570A Expired CA420570A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA420570A (en)

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