CA441947A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA441947A
CA441947A CA441947A CA441947DA CA441947A CA 441947 A CA441947 A CA 441947A CA 441947 A CA441947 A CA 441947A CA 441947D A CA441947D A CA 441947DA CA 441947 A CA441947 A CA 441947A
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
CA441947A
Other languages
English (en)
Inventor
Simonds Johnson Kenneth
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 CA441947A publication Critical patent/CA441947A/fr
Expired legal-status Critical Current

Links

CA441947A Systeme telephonique Expired CA441947A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA441947T

Publications (1)

Publication Number Publication Date
CA441947A true CA441947A (fr) 1947-06-03

Family

ID=35557178

Family Applications (1)

Application Number Title Priority Date Filing Date
CA441947A Expired CA441947A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA441947A (fr)

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