CA200074A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA200074A
CA200074A CA200074A CA200074DA CA200074A CA 200074 A CA200074 A CA 200074A CA 200074 A CA200074 A CA 200074A CA 200074D A CA200074D A CA 200074DA CA 200074 A CA200074 A CA 200074A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
telephone
exchange
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
CA200074A
Other languages
English (en)
Inventor
H. Clark Edgar
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.)
INTERNATIONAL WESTERN ELECTRIC CO
AT&T Corp
Original Assignee
INTERNATIONAL WESTERN ELECTRIC CO
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA200074A publication Critical patent/CA200074A/fr
Expired legal-status Critical Current

Links

CA200074A Systeme d'echange telephonique Expired CA200074A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA200074T

Publications (1)

Publication Number Publication Date
CA200074A true CA200074A (fr) 1920-05-11

Family

ID=35074511

Family Applications (1)

Application Number Title Priority Date Filing Date
CA200074A Expired CA200074A (fr) Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA200074A (fr)

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