CA233168A - Exchange telephonique - Google Patents

Exchange telephonique

Info

Publication number
CA233168A
CA233168A CA233168A CA233168DA CA233168A CA 233168 A CA233168 A CA 233168A CA 233168 A CA233168 A CA 233168A CA 233168D A CA233168D A CA 233168DA CA 233168 A CA233168 A CA 233168A
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
CA233168A
Other languages
English (en)
Inventor
A. Ludquist 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 CA233168A publication Critical patent/CA233168A/fr
Expired legal-status Critical Current

Links

CA233168A Exchange telephonique Expired CA233168A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA233168T

Publications (1)

Publication Number Publication Date
CA233168A true CA233168A (fr) 1923-07-31

Family

ID=35130541

Family Applications (1)

Application Number Title Priority Date Filing Date
CA233168A Expired CA233168A (fr) Exchange telephonique

Country Status (1)

Country Link
CA (1) CA233168A (fr)

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