CA426427A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA426427A
CA426427A CA426427A CA426427DA CA426427A CA 426427 A CA426427 A CA 426427A CA 426427 A CA426427 A CA 426427A CA 426427D A CA426427D A CA 426427DA CA 426427 A CA426427 A CA 426427A
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
CA426427A
Other languages
English (en)
Inventor
Emerson 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.)
AT&T Inc
Original Assignee
Western Electric Co Inc
Bell Telephone Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA426427A publication Critical patent/CA426427A/fr
Expired legal-status Critical Current

Links

CA426427A Systeme telephonique Expired CA426427A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA426427T

Publications (1)

Publication Number Publication Date
CA426427A true CA426427A (fr) 1945-03-27

Family

ID=35537450

Family Applications (1)

Application Number Title Priority Date Filing Date
CA426427A Expired CA426427A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA426427A (fr)

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