CA443405A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA443405A
CA443405A CA443405A CA443405DA CA443405A CA 443405 A CA443405 A CA 443405A CA 443405 A CA443405 A CA 443405A CA 443405D A CA443405D A CA 443405DA CA 443405 A CA443405 A CA 443405A
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
CA443405A
Other languages
French (fr)
Inventor
Edmund Beale Charles
Gillings 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 CA443405A publication Critical patent/CA443405A/en
Expired legal-status Critical Current

Links

CA443405A Telephone system Expired CA443405A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA443405T

Publications (1)

Publication Number Publication Date
CA443405A true CA443405A (en) 1947-08-05

Family

ID=35558632

Family Applications (1)

Application Number Title Priority Date Filing Date
CA443405A Expired CA443405A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA443405A (en)

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