CA167992A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA167992A
CA167992A CA000167992A CA167992DA CA167992A CA 167992 A CA167992 A CA 167992A CA 000167992 A CA000167992 A CA 000167992A CA 167992D A CA167992D A CA 167992DA CA 167992 A CA167992 A CA 167992A
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
CA000167992A
Other languages
English (en)
Inventor
Henry Peter Clausen
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA167992A publication Critical patent/CA167992A/fr
Expired legal-status Critical Current

Links

CA000167992A 1915-05-14 1915-05-14 Systeme d'echange telephonique Expired CA167992A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA167992T 1915-05-14

Publications (1)

Publication Number Publication Date
CA167992A true CA167992A (fr) 1916-03-07

Family

ID=45287662

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000167992A Expired CA167992A (fr) 1915-05-14 1915-05-14 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA167992A (fr)

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