CA445445A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA445445A
CA445445A CA445445A CA445445DA CA445445A CA 445445 A CA445445 A CA 445445A CA 445445 A CA445445 A CA 445445A CA 445445D A CA445445D A CA 445445DA CA 445445 A CA445445 A CA 445445A
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
CA445445A
Other languages
French (fr)
Inventor
H. Herrick Roswell
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 CA445445A publication Critical patent/CA445445A/en
Expired legal-status Critical Current

Links

CA445445A Telephone system Expired CA445445A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA445445T

Publications (1)

Publication Number Publication Date
CA445445A true CA445445A (en) 1947-12-09

Family

ID=35563100

Family Applications (1)

Application Number Title Priority Date Filing Date
CA445445A Expired CA445445A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA445445A (en)

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