CA440708A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA440708A
CA440708A CA440708A CA440708DA CA440708A CA 440708 A CA440708 A CA 440708A CA 440708 A CA440708 A CA 440708A CA 440708D A CA440708D A CA 440708DA CA 440708 A CA440708 A CA 440708A
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
CA440708A
Other languages
English (en)
Inventor
Hovland Henry
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 CA440708A publication Critical patent/CA440708A/fr
Expired legal-status Critical Current

Links

CA440708A Systeme telephonique Expired CA440708A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA440708T

Publications (1)

Publication Number Publication Date
CA440708A true CA440708A (fr) 1947-04-08

Family

ID=35555942

Family Applications (1)

Application Number Title Priority Date Filing Date
CA440708A Expired CA440708A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA440708A (fr)

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