CA168135A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA168135A
CA168135A CA000168135A CA168135DA CA168135A CA 168135 A CA168135 A CA 168135A CA 000168135 A CA000168135 A CA 000168135A CA 168135D A CA168135D A CA 168135DA CA 168135 A CA168135 A CA 168135A
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
CA000168135A
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 Inc
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 CA168135A publication Critical patent/CA168135A/fr
Expired legal-status Critical Current

Links

CA000168135A 1914-12-18 1914-12-18 Systeme d'echange telephonique Expired CA168135A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA168135T 1914-12-18

Publications (1)

Publication Number Publication Date
CA168135A true CA168135A (fr) 1916-03-14

Family

ID=45287804

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000168135A Expired CA168135A (fr) 1914-12-18 1914-12-18 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA168135A (fr)

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