CA454334A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA454334A
CA454334A CA454334A CA454334DA CA454334A CA 454334 A CA454334 A CA 454334A CA 454334 A CA454334 A CA 454334A CA 454334D A CA454334D A CA 454334DA CA 454334 A CA454334 A CA 454334A
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
CA454334A
Other languages
English (en)
Inventor
John Davidson, Jr.
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 CA454334A publication Critical patent/CA454334A/fr
Expired legal-status Critical Current

Links

CA454334A Systeme telephonique Expired CA454334A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA454334T

Publications (1)

Publication Number Publication Date
CA454334A true CA454334A (fr) 1949-01-25

Family

ID=35572069

Family Applications (1)

Application Number Title Priority Date Filing Date
CA454334A Expired CA454334A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA454334A (fr)

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