CA424759A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA424759A
CA424759A CA424759A CA424759DA CA424759A CA 424759 A CA424759 A CA 424759A CA 424759 A CA424759 A CA 424759A CA 424759D A CA424759D A CA 424759DA CA 424759 A CA424759 A CA 424759A
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
CA424759A
Other languages
English (en)
Inventor
Francis Toomey John
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 CA424759A publication Critical patent/CA424759A/fr
Expired legal-status Critical Current

Links

CA424759A Systeme telephonique Expired CA424759A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA424759T

Publications (1)

Publication Number Publication Date
CA424759A true CA424759A (fr) 1944-12-26

Family

ID=35535774

Family Applications (1)

Application Number Title Priority Date Filing Date
CA424759A Expired CA424759A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA424759A (fr)

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