CA186088A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA186088A
CA186088A CA000186088A CA186088DA CA186088A CA 186088 A CA186088 A CA 186088A CA 000186088 A CA000186088 A CA 000186088A CA 186088D A CA186088D A CA 186088DA CA 186088 A CA186088 A CA 186088A
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
CA000186088A
Other languages
English (en)
Inventor
Henry C. Egerton
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 CA186088A publication Critical patent/CA186088A/fr
Expired legal-status Critical Current

Links

CA000186088A 1917-09-24 1917-09-24 Systeme d'echange telephonique Expired CA186088A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA186088T 1917-09-24

Publications (1)

Publication Number Publication Date
CA186088A true CA186088A (fr) 1918-08-13

Family

ID=45305740

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000186088A Expired CA186088A (fr) 1917-09-24 1917-09-24 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA186088A (fr)

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