CA250486A - Dispositif de sonnerie de circuit telephonique - Google Patents

Dispositif de sonnerie de circuit telephonique

Info

Publication number
CA250486A
CA250486A CA250486A CA250486DA CA250486A CA 250486 A CA250486 A CA 250486A CA 250486 A CA250486 A CA 250486A CA 250486D A CA250486D A CA 250486DA CA 250486 A CA250486 A CA 250486A
Authority
CA
Canada
Prior art keywords
telephone circuits
ringing device
ringing
telephone
circuits
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
CA250486A
Other languages
English (en)
Inventor
Percival Medlin John
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA250486A publication Critical patent/CA250486A/fr
Expired legal-status Critical Current

Links

CA250486A Dispositif de sonnerie de circuit telephonique Expired CA250486A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA250486T

Publications (1)

Publication Number Publication Date
CA250486A true CA250486A (fr) 1925-06-09

Family

ID=35157460

Family Applications (1)

Application Number Title Priority Date Filing Date
CA250486A Expired CA250486A (fr) Dispositif de sonnerie de circuit telephonique

Country Status (1)

Country Link
CA (1) CA250486A (fr)

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