CA680440A - Tone operated control circuit - Google Patents

Tone operated control circuit

Info

Publication number
CA680440A
CA680440A CA680440A CA680440DA CA680440A CA 680440 A CA680440 A CA 680440A CA 680440 A CA680440 A CA 680440A CA 680440D A CA680440D A CA 680440DA CA 680440 A CA680440 A CA 680440A
Authority
CA
Canada
Prior art keywords
control circuit
operated control
tone operated
tone
circuit
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
CA680440A
Inventor
F. Benewicz Thomas
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA680440A publication Critical patent/CA680440A/en
Expired legal-status Critical Current

Links

CA680440A Tone operated control circuit Expired CA680440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA680440T

Publications (1)

Publication Number Publication Date
CA680440A true CA680440A (en) 1964-02-18

Family

ID=35981518

Family Applications (1)

Application Number Title Priority Date Filing Date
CA680440A Expired CA680440A (en) Tone operated control circuit

Country Status (1)

Country Link
CA (1) CA680440A (en)

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