CA234009A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA234009A
CA234009A CA234009A CA234009DA CA234009A CA 234009 A CA234009 A CA 234009A CA 234009 A CA234009 A CA 234009A CA 234009D A CA234009D A CA 234009DA CA 234009 A CA234009 A CA 234009A
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
CA234009A
Other languages
English (en)
Inventor
B. Murphy Paul
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
Original Assignee
INTERNATIONAL WESTERN ELECTRIC Co
Publication date
Application granted granted Critical
Publication of CA234009A publication Critical patent/CA234009A/fr
Expired legal-status Critical Current

Links

CA234009A Systeme d'echange telephonique Expired CA234009A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA234009T

Publications (1)

Publication Number Publication Date
CA234009A true CA234009A (fr) 1923-09-04

Family

ID=35131383

Family Applications (1)

Application Number Title Priority Date Filing Date
CA234009A Expired CA234009A (fr) Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA234009A (fr)

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