CA289970A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA289970A
CA289970A CA289970A CA289970DA CA289970A CA 289970 A CA289970 A CA 289970A CA 289970 A CA289970 A CA 289970A CA 289970D A CA289970D A CA 289970DA CA 289970 A CA289970 A CA 289970A
Authority
CA
Canada
Prior art keywords
telephone system
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
CA289970A
Other languages
English (en)
Inventor
Wicks 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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA289970A publication Critical patent/CA289970A/fr
Expired legal-status Critical Current

Links

CA289970A Systeme telephonique Expired CA289970A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA289970T

Publications (1)

Publication Number Publication Date
CA289970A true CA289970A (fr) 1929-05-28

Family

ID=35226782

Family Applications (1)

Application Number Title Priority Date Filing Date
CA289970A Expired CA289970A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA289970A (fr)

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