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CA452411A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA452411A
CA452411A CA452411A CA452411DA CA452411A CA 452411 A CA452411 A CA 452411A CA 452411 A CA452411 A CA 452411A CA 452411D A CA452411D A CA 452411DA CA 452411 A CA452411 A CA 452411A
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
CA452411A
Other languages
English (en)
Inventor
E. Hersey Ralph
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.)
WESTERN ELECTRIC COMPAY
AT&T Corp
Original Assignee
WESTERN ELECTRIC COMPAY
Bell Telephone Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA452411A publication Critical patent/CA452411A/fr
Expired legal-status Critical Current

Links

CA452411A Systeme telephonique Expired CA452411A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA452411T

Publications (1)

Publication Number Publication Date
CA452411A true CA452411A (fr) 1948-11-02

Family

ID=35570140

Family Applications (1)

Application Number Title Priority Date Filing Date
CA452411A Expired CA452411A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA452411A (fr)

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