CA171665A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA171665A
CA171665A CA000171665A CA171665DA CA171665A CA 171665 A CA171665 A CA 171665A CA 000171665 A CA000171665 A CA 000171665A CA 171665D A CA171665D A CA 171665DA CA 171665 A CA171665 A CA 171665A
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
CA000171665A
Other languages
English (en)
Inventor
Charles Lane Goodrum
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 CA171665A publication Critical patent/CA171665A/fr
Expired legal-status Critical Current

Links

CA000171665A 1915-04-15 1915-04-15 Systeme d'echange telephonique Expired CA171665A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA171665T 1915-04-15

Publications (1)

Publication Number Publication Date
CA171665A true CA171665A (fr) 1916-08-29

Family

ID=45291323

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000171665A Expired CA171665A (fr) 1915-04-15 1915-04-15 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA171665A (fr)

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