CA448847A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA448847A
CA448847A CA448847A CA448847DA CA448847A CA 448847 A CA448847 A CA 448847A CA 448847 A CA448847 A CA 448847A CA 448847D A CA448847D A CA 448847DA CA 448847 A CA448847 A CA 448847A
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
CA448847A
Other languages
French (fr)
Inventor
E. Peterson Seth
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 CA448847A publication Critical patent/CA448847A/en
Expired legal-status Critical Current

Links

CA448847A Telephone system Expired CA448847A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA448847T

Publications (1)

Publication Number Publication Date
CA448847A true CA448847A (en) 1948-06-01

Family

ID=35566546

Family Applications (1)

Application Number Title Priority Date Filing Date
CA448847A Expired CA448847A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA448847A (en)

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