CA478353A - Automatic telephone systems - Google Patents

Automatic telephone systems

Info

Publication number
CA478353A
CA478353A CA478353A CA478353DA CA478353A CA 478353 A CA478353 A CA 478353A CA 478353 A CA478353 A CA 478353A CA 478353D A CA478353D A CA 478353DA CA 478353 A CA478353 A CA 478353A
Authority
CA
Canada
Prior art keywords
telephone systems
automatic telephone
automatic
systems
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
CA478353A
Other languages
French (fr)
Inventor
E. Ostline 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
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA478353A publication Critical patent/CA478353A/en
Expired legal-status Critical Current

Links

CA478353A Automatic telephone systems Expired CA478353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA478353T

Publications (1)

Publication Number Publication Date
CA478353A true CA478353A (en) 1951-11-06

Family

ID=35618008

Family Applications (1)

Application Number Title Priority Date Filing Date
CA478353A Expired CA478353A (en) Automatic telephone systems

Country Status (1)

Country Link
CA (1) CA478353A (en)

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