CA531173A - Telephone station ringing equipment - Google Patents

Telephone station ringing equipment

Info

Publication number
CA531173A
CA531173A CA531173A CA531173DA CA531173A CA 531173 A CA531173 A CA 531173A CA 531173 A CA531173 A CA 531173A CA 531173D A CA531173D A CA 531173DA CA 531173 A CA531173 A CA 531173A
Authority
CA
Canada
Prior art keywords
telephone station
ringing equipment
station ringing
equipment
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
CA531173A
Other languages
French (fr)
Inventor
Hatton William
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.)
International Telephone and Telegraph Corp
Original Assignee
International Telephone and Telegraph Corp
Publication date
Application granted granted Critical
Publication of CA531173A publication Critical patent/CA531173A/en
Expired legal-status Critical Current

Links

CA531173A Telephone station ringing equipment Expired CA531173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA531173T

Publications (1)

Publication Number Publication Date
CA531173A true CA531173A (en) 1956-10-02

Family

ID=35684938

Family Applications (1)

Application Number Title Priority Date Filing Date
CA531173A Expired CA531173A (en) Telephone station ringing equipment

Country Status (1)

Country Link
CA (1) CA531173A (en)

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