CA301283A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA301283A
CA301283A CA301283A CA301283DA CA301283A CA 301283 A CA301283 A CA 301283A CA 301283 A CA301283 A CA 301283A CA 301283D A CA301283D A CA 301283DA CA 301283 A CA301283 A CA 301283A
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
CA301283A
Other languages
English (en)
Inventor
John Bowne Langford
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 CA301283A publication Critical patent/CA301283A/fr
Expired legal-status Critical Current

Links

CA301283A Systeme telephonique Expired CA301283A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA301283T

Publications (1)

Publication Number Publication Date
CA301283A true CA301283A (fr) 1930-06-17

Family

ID=35254429

Family Applications (1)

Application Number Title Priority Date Filing Date
CA301283A Expired CA301283A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA301283A (fr)

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