CA185169A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA185169A
CA185169A CA000185169A CA185169DA CA185169A CA 185169 A CA185169 A CA 185169A CA 000185169 A CA000185169 A CA 000185169A CA 185169D A CA185169D A CA 185169DA CA 185169 A CA185169 A CA 185169A
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
CA000185169A
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 CA185169A publication Critical patent/CA185169A/fr
Expired legal-status Critical Current

Links

CA000185169A 1917-05-26 1917-05-26 Systeme d'echange telephonique Expired CA185169A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA185169T 1917-05-26

Publications (1)

Publication Number Publication Date
CA185169A true CA185169A (fr) 1918-06-25

Family

ID=45304821

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000185169A Expired CA185169A (fr) 1917-05-26 1917-05-26 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA185169A (fr)

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