CA544830A - Electronic ringing frequency generator - Google Patents

Electronic ringing frequency generator

Info

Publication number
CA544830A
CA544830A CA544830A CA544830DA CA544830A CA 544830 A CA544830 A CA 544830A CA 544830 A CA544830 A CA 544830A CA 544830D A CA544830D A CA 544830DA CA 544830 A CA544830 A CA 544830A
Authority
CA
Canada
Prior art keywords
frequency generator
ringing frequency
electronic ringing
electronic
generator
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
CA544830A
Other languages
French (fr)
Inventor
J. Mccreary Harold
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.)
General Telephone Laboratories Inc
Original Assignee
General Telephone Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA544830A publication Critical patent/CA544830A/en
Expired legal-status Critical Current

Links

CA544830A Electronic ringing frequency generator Expired CA544830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA544830T

Publications (1)

Publication Number Publication Date
CA544830A true CA544830A (en) 1957-08-13

Family

ID=35702002

Family Applications (1)

Application Number Title Priority Date Filing Date
CA544830A Expired CA544830A (en) Electronic ringing frequency generator

Country Status (1)

Country Link
CA (1) CA544830A (en)

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