CA661589A - Tone generator in a telephone system - Google Patents

Tone generator in a telephone system

Info

Publication number
CA661589A
CA661589A CA661589A CA661589DA CA661589A CA 661589 A CA661589 A CA 661589A CA 661589 A CA661589 A CA 661589A CA 661589D A CA661589D A CA 661589DA CA 661589 A CA661589 A CA 661589A
Authority
CA
Canada
Prior art keywords
telephone system
tone generator
tone
generator
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
CA661589A
Inventor
O. Gifford Donald
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 CA661589A publication Critical patent/CA661589A/en
Expired legal-status Critical Current

Links

CA661589A Tone generator in a telephone system Expired CA661589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA661589T

Publications (1)

Publication Number Publication Date
CA661589A true CA661589A (en) 1963-04-16

Family

ID=35955700

Family Applications (1)

Application Number Title Priority Date Filing Date
CA661589A Expired CA661589A (en) Tone generator in a telephone system

Country Status (1)

Country Link
CA (1) CA661589A (en)

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