CA452491A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA452491A
CA452491A CA452491A CA452491DA CA452491A CA 452491 A CA452491 A CA 452491A CA 452491 A CA452491 A CA 452491A CA 452491D A CA452491D A CA 452491DA CA 452491 A CA452491 A CA 452491A
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
CA452491A
Other languages
English (en)
Inventor
N. Newstedt Harry
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA452491A publication Critical patent/CA452491A/fr
Expired legal-status Critical Current

Links

CA452491A Systeme telephonique Expired CA452491A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA452491T

Publications (1)

Publication Number Publication Date
CA452491A true CA452491A (fr) 1948-11-09

Family

ID=35570221

Family Applications (1)

Application Number Title Priority Date Filing Date
CA452491A Expired CA452491A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA452491A (fr)

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