CA308092A - Dispositif d'appels - Google Patents

Dispositif d'appels

Info

Publication number
CA308092A
CA308092A CA308092A CA308092DA CA308092A CA 308092 A CA308092 A CA 308092A CA 308092 A CA308092 A CA 308092A CA 308092D A CA308092D A CA 308092DA CA 308092 A CA308092 A CA 308092A
Authority
CA
Canada
Prior art keywords
calling device
calling
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
CA308092A
Other languages
English (en)
Inventor
F. Obergfell Herbert
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA308092A publication Critical patent/CA308092A/fr
Expired legal-status Critical Current

Links

CA308092A Dispositif d'appels Expired CA308092A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA308092T

Publications (1)

Publication Number Publication Date
CA308092A true CA308092A (fr) 1931-01-27

Family

ID=35261244

Family Applications (1)

Application Number Title Priority Date Filing Date
CA308092A Expired CA308092A (fr) Dispositif d'appels

Country Status (1)

Country Link
CA (1) CA308092A (fr)

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