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CA297506A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA297506A
CA297506A CA297506A CA297506DA CA297506A CA 297506 A CA297506 A CA 297506A CA 297506 A CA297506 A CA 297506A CA 297506D A CA297506D A CA 297506DA CA 297506 A CA297506 A CA 297506A
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
CA297506A
Other languages
English (en)
Inventor
Cushman Caverly Harry
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 CA297506A publication Critical patent/CA297506A/fr
Expired legal-status Critical Current

Links

CA297506A Systeme telephonique Expired CA297506A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA297506T

Publications (1)

Publication Number Publication Date
CA297506A true CA297506A (fr) 1930-02-11

Family

ID=35234825

Family Applications (1)

Application Number Title Priority Date Filing Date
CA297506A Expired CA297506A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA297506A (fr)

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