CA234541A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA234541A
CA234541A CA234541A CA234541DA CA234541A CA 234541 A CA234541 A CA 234541A CA 234541 A CA234541 A CA 234541A CA 234541D A CA234541D A CA 234541DA CA 234541 A CA234541 A CA 234541A
Authority
CA
Canada
Prior art keywords
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
CA234541A
Other languages
English (en)
Inventor
A. Lundquist Frank
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.)
HENRY S CONRAD
Original Assignee
HENRY S CONRAD
Publication date
Application granted granted Critical
Publication of CA234541A publication Critical patent/CA234541A/fr
Expired legal-status Critical Current

Links

CA234541A Systeme d'echange telephonique Expired CA234541A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA234541T

Publications (1)

Publication Number Publication Date
CA234541A true CA234541A (fr) 1923-09-25

Family

ID=35131915

Family Applications (1)

Application Number Title Priority Date Filing Date
CA234541A Expired CA234541A (fr) Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA234541A (fr)

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