CA177247A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA177247A
CA177247A CA000177247A CA177247DA CA177247A CA 177247 A CA177247 A CA 177247A CA 000177247 A CA000177247 A CA 000177247A CA 177247D A CA177247D A CA 177247DA CA 177247 A CA177247 A CA 177247A
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
CA000177247A
Other languages
English (en)
Inventor
Alben Emmanuel Lundell
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 CA177247A publication Critical patent/CA177247A/fr
Expired legal-status Critical Current

Links

CA000177247A 1916-03-23 1916-03-23 Systeme d'echange telephonique Expired CA177247A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA177247T 1916-03-23

Publications (1)

Publication Number Publication Date
CA177247A true CA177247A (fr) 1917-05-22

Family

ID=45296900

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000177247A Expired CA177247A (fr) 1916-03-23 1916-03-23 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA177247A (fr)

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