CA423455A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA423455A
CA423455A CA423455A CA423455DA CA423455A CA 423455 A CA423455 A CA 423455A CA 423455 A CA423455 A CA 423455A CA 423455D A CA423455D A CA 423455DA CA 423455 A CA423455 A CA 423455A
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
CA423455A
Other languages
English (en)
Inventor
Herman Allen Lawrence
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 CA423455A publication Critical patent/CA423455A/fr
Expired legal-status Critical Current

Links

CA423455A Systeme telephonique Expired CA423455A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA423455T

Publications (1)

Publication Number Publication Date
CA423455A true CA423455A (fr) 1944-10-24

Family

ID=35534458

Family Applications (1)

Application Number Title Priority Date Filing Date
CA423455A Expired CA423455A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA423455A (fr)

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