CA423180A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA423180A
CA423180A CA423180A CA423180DA CA423180A CA 423180 A CA423180 A CA 423180A CA 423180 A CA423180 A CA 423180A CA 423180D A CA423180D A CA 423180DA CA 423180 A CA423180 A CA 423180A
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
CA423180A
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 Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA423180A publication Critical patent/CA423180A/fr
Expired legal-status Critical Current

Links

CA423180A Systeme telephonique Expired CA423180A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA423180T

Publications (1)

Publication Number Publication Date
CA423180A true CA423180A (fr) 1944-10-10

Family

ID=35534182

Family Applications (1)

Application Number Title Priority Date Filing Date
CA423180A Expired CA423180A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA423180A (fr)

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