CA422193A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA422193A
CA422193A CA422193A CA422193DA CA422193A CA 422193 A CA422193 A CA 422193A CA 422193 A CA422193 A CA 422193A CA 422193D A CA422193D A CA 422193DA CA 422193 A CA422193 A CA 422193A
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
CA422193A
Other languages
English (en)
Inventor
Ernest Lomax Clarence
Original Assignee
Automatic Electric Laboratories Inc
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA422193A publication Critical patent/CA422193A/fr
Expired legal-status Critical Current

Links

CA422193A Systeme telephonique Expired CA422193A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA422193T

Publications (1)

Publication Number Publication Date
CA422193A true CA422193A (fr) 1944-08-22

Family

ID=35533182

Family Applications (1)

Application Number Title Priority Date Filing Date
CA422193A Expired CA422193A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA422193A (fr)

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