CA576961A - Telephone ring-up circuit - Google Patents

Telephone ring-up circuit

Info

Publication number
CA576961A
CA576961A CA576961A CA576961DA CA576961A CA 576961 A CA576961 A CA 576961A CA 576961 A CA576961 A CA 576961A CA 576961D A CA576961D A CA 576961DA CA 576961 A CA576961 A CA 576961A
Authority
CA
Canada
Prior art keywords
circuit
telephone ring
telephone
ring
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
CA576961A
Other languages
French (fr)
Inventor
G. Spark Edward
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 CA576961A publication Critical patent/CA576961A/en
Expired legal-status Critical Current

Links

CA576961A Telephone ring-up circuit Expired CA576961A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA576961T

Publications (1)

Publication Number Publication Date
CA576961A true CA576961A (en) 1959-06-02

Family

ID=35752820

Family Applications (1)

Application Number Title Priority Date Filing Date
CA576961A Expired CA576961A (en) Telephone ring-up circuit

Country Status (1)

Country Link
CA (1) CA576961A (en)

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