CA440944A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA440944A
CA440944A CA440944A CA440944DA CA440944A CA 440944 A CA440944 A CA 440944A CA 440944 A CA440944 A CA 440944A CA 440944D A CA440944D A CA 440944DA CA 440944 A CA440944 A CA 440944A
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
CA440944A
Other languages
English (en)
Inventor
J. Ray Arthur
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA440944A publication Critical patent/CA440944A/fr
Expired legal-status Critical Current

Links

CA440944A Systeme telephonique Expired CA440944A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA440944T

Publications (1)

Publication Number Publication Date
CA440944A true CA440944A (fr) 1947-04-22

Family

ID=35556176

Family Applications (1)

Application Number Title Priority Date Filing Date
CA440944A Expired CA440944A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA440944A (fr)

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