CA216524A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA216524A
CA216524A CA216524A CA216524DA CA216524A CA 216524 A CA216524 A CA 216524A CA 216524 A CA216524 A CA 216524A CA 216524D A CA216524D A CA 216524DA CA 216524 A CA216524 A CA 216524A
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
CA216524A
Other languages
English (en)
Inventor
Erickson 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.)
Nortel Networks Ltd
Automatic Electric Co
Original Assignee
Northern Electric Co Ltd
Automatic Electric Co
Publication date
Application granted granted Critical
Publication of CA216524A publication Critical patent/CA216524A/fr
Expired legal-status Critical Current

Links

CA216524A Systeme telephonique Expired CA216524A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA216524T

Publications (1)

Publication Number Publication Date
CA216524A true CA216524A (fr) 1922-03-07

Family

ID=35110968

Family Applications (1)

Application Number Title Priority Date Filing Date
CA216524A Expired CA216524A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA216524A (fr)

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