CA225791A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA225791A
CA225791A CA225791A CA225791DA CA225791A CA 225791 A CA225791 A CA 225791A CA 225791 A CA225791 A CA 225791A CA 225791D A CA225791D A CA 225791DA CA 225791 A CA225791 A CA 225791A
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
CA225791A
Other languages
English (en)
Inventor
Lane Goodrum Charles
L. Mcquarrie James
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 CA225791A publication Critical patent/CA225791A/fr
Expired legal-status Critical Current

Links

CA225791A Systeme d'echange telephonique Expired CA225791A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA225791T

Publications (1)

Publication Number Publication Date
CA225791A true CA225791A (fr) 1922-11-07

Family

ID=35121394

Family Applications (1)

Application Number Title Priority Date Filing Date
CA225791A Expired CA225791A (fr) Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA225791A (fr)

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