CA186835A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA186835A
CA186835A CA000186835A CA186835DA CA186835A CA 186835 A CA186835 A CA 186835A CA 000186835 A CA000186835 A CA 000186835A CA 186835D A CA186835D A CA 186835DA CA 186835 A CA186835 A CA 186835A
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
CA000186835A
Other languages
English (en)
Inventor
Alben E. 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 CA186835A publication Critical patent/CA186835A/fr
Expired legal-status Critical Current

Links

CA000186835A 1917-10-12 1917-10-12 Systeme d'echange telephonique Expired CA186835A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA186835T 1917-10-12

Publications (1)

Publication Number Publication Date
CA186835A true CA186835A (fr) 1918-10-01

Family

ID=45306486

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000186835A Expired CA186835A (fr) 1917-10-12 1917-10-12 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA186835A (fr)

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