CA472098A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA472098A
CA472098A CA472098A CA472098DA CA472098A CA 472098 A CA472098 A CA 472098A CA 472098 A CA472098 A CA 472098A CA 472098D A CA472098D A CA 472098DA CA 472098 A CA472098 A CA 472098A
Authority
CA
Canada
Prior art keywords
telephone systems
telephone
systems
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
CA472098A
Other languages
French (fr)
Inventor
W. Balzer Harvey
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 Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA472098A publication Critical patent/CA472098A/en
Expired legal-status Critical Current

Links

CA472098A Telephone systems Expired CA472098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA472098T

Publications (1)

Publication Number Publication Date
CA472098A true CA472098A (en) 1951-03-13

Family

ID=35606053

Family Applications (1)

Application Number Title Priority Date Filing Date
CA472098A Expired CA472098A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA472098A (en)

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