CA438444A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA438444A
CA438444A CA438444A CA438444DA CA438444A CA 438444 A CA438444 A CA 438444A CA 438444 A CA438444 A CA 438444A CA 438444D A CA438444D A CA 438444DA CA 438444 A CA438444 A CA 438444A
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
CA438444A
Other languages
English (en)
Inventor
Edmund Beale Charles
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 Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA438444A publication Critical patent/CA438444A/fr
Expired legal-status Critical Current

Links

CA438444A Systeme telephonique Expired CA438444A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA438444T

Publications (1)

Publication Number Publication Date
CA438444A true CA438444A (fr) 1946-12-10

Family

ID=35553679

Family Applications (1)

Application Number Title Priority Date Filing Date
CA438444A Expired CA438444A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA438444A (fr)

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