CA390877A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA390877A
CA390877A CA390877A CA390877DA CA390877A CA 390877 A CA390877 A CA 390877A CA 390877 A CA390877 A CA 390877A CA 390877D A CA390877D A CA 390877DA CA 390877 A CA390877 A CA 390877A
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
CA390877A
Other languages
English (en)
Inventor
Philip Goodwin Wright Esmond
Clifford Hartley George
Ian Wyndham Paul
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 CA390877A publication Critical patent/CA390877A/fr
Expired legal-status Critical Current

Links

CA390877A Systeme telephonique Expired CA390877A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA390877T

Publications (1)

Publication Number Publication Date
CA390877A true CA390877A (fr) 1940-08-20

Family

ID=35398445

Family Applications (1)

Application Number Title Priority Date Filing Date
CA390877A Expired CA390877A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA390877A (fr)

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