CA196963A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA196963A
CA196963A CA196963A CA196963DA CA196963A CA 196963 A CA196963 A CA 196963A CA 196963 A CA196963 A CA 196963A CA 196963D A CA196963D A CA 196963DA CA 196963 A CA196963 A CA 196963A
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
CA196963A
Other languages
English (en)
Inventor
D. Conway Roy
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 CA196963A publication Critical patent/CA196963A/fr
Expired legal-status Critical Current

Links

CA196963A Systeme telephonique Expired CA196963A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA196963T

Publications (1)

Publication Number Publication Date
CA196963A true CA196963A (fr) 1920-02-03

Family

ID=35071401

Family Applications (1)

Application Number Title Priority Date Filing Date
CA196963A Expired CA196963A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA196963A (fr)

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