CA401611A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA401611A
CA401611A CA401611A CA401611DA CA401611A CA 401611 A CA401611 A CA 401611A CA 401611 A CA401611 A CA 401611A CA 401611D A CA401611D A CA 401611DA CA 401611 A CA401611 A CA 401611A
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
CA401611A
Other languages
English (en)
Inventor
Ludwig Kahn Frederick
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA401611A publication Critical patent/CA401611A/fr
Expired legal-status Critical Current

Links

CA401611A Systeme telephonique Expired CA401611A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA401611T

Publications (1)

Publication Number Publication Date
CA401611A true CA401611A (fr) 1941-12-23

Family

ID=35412057

Family Applications (1)

Application Number Title Priority Date Filing Date
CA401611A Expired CA401611A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA401611A (fr)

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