CA422031A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA422031A
CA422031A CA422031A CA422031DA CA422031A CA 422031 A CA422031 A CA 422031A CA 422031 A CA422031 A CA 422031A CA 422031D A CA422031D A CA 422031DA CA 422031 A CA422031 A CA 422031A
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
CA422031A
Other languages
French (fr)
Inventor
Alvin Marrison Warren
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 CA422031A publication Critical patent/CA422031A/en
Expired legal-status Critical Current

Links

CA422031A Telephone system Expired CA422031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA422031T

Publications (1)

Publication Number Publication Date
CA422031A true CA422031A (en) 1944-08-08

Family

ID=35533018

Family Applications (1)

Application Number Title Priority Date Filing Date
CA422031A Expired CA422031A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA422031A (en)

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