CA944837A - Tone signaling system - Google Patents

Tone signaling system

Info

Publication number
CA944837A
CA944837A CA154,074A CA154074A CA944837A CA 944837 A CA944837 A CA 944837A CA 154074 A CA154074 A CA 154074A CA 944837 A CA944837 A CA 944837A
Authority
CA
Canada
Prior art keywords
signaling system
tone signaling
tone
signaling
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
CA154,074A
Other versions
CA154074S (en
Inventor
Otis L. Hale
Charles D. Rakes
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.)
FAN TRON CORP
Original Assignee
FAN TRON CORP
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US887971A external-priority patent/US3649770A/en
Priority claimed from CA099350A external-priority patent/CA928818A/en
Application filed by FAN TRON CORP filed Critical FAN TRON CORP
Priority to CA154,074A priority Critical patent/CA944837A/en
Application granted granted Critical
Publication of CA944837A publication Critical patent/CA944837A/en
Expired legal-status Critical Current

Links

CA154,074A 1969-12-24 1972-10-17 Tone signaling system Expired CA944837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA154,074A CA944837A (en) 1969-12-24 1972-10-17 Tone signaling system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US887971A US3649770A (en) 1969-12-24 Tone signaling system
CA099350A CA928818A (en) 1969-12-24 1970-11-27 Tone signaling system
CA154,074A CA944837A (en) 1969-12-24 1972-10-17 Tone signaling system

Publications (1)

Publication Number Publication Date
CA944837A true CA944837A (en) 1974-04-02

Family

ID=27160890

Family Applications (1)

Application Number Title Priority Date Filing Date
CA154,074A Expired CA944837A (en) 1969-12-24 1972-10-17 Tone signaling system

Country Status (1)

Country Link
CA (1) CA944837A (en)

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