CA422286A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA422286A
CA422286A CA422286A CA422286DA CA422286A CA 422286 A CA422286 A CA 422286A CA 422286 A CA422286 A CA 422286A CA 422286D A CA422286D A CA 422286DA CA 422286 A CA422286 A CA 422286A
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
CA422286A
Other languages
French (fr)
Inventor
Gershom Walsh John
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 CA422286A publication Critical patent/CA422286A/en
Expired legal-status Critical Current

Links

CA422286A Telephone system Expired CA422286A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA422286T

Publications (1)

Publication Number Publication Date
CA422286A true CA422286A (en) 1944-08-22

Family

ID=35533277

Family Applications (1)

Application Number Title Priority Date Filing Date
CA422286A Expired CA422286A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA422286A (en)

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