CA175426A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA175426A
CA175426A CA000175426A CA175426DA CA175426A CA 175426 A CA175426 A CA 175426A CA 000175426 A CA000175426 A CA 000175426A CA 175426D A CA175426D A CA 175426DA CA 175426 A CA175426 A CA 175426A
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
CA000175426A
Other languages
English (en)
Inventor
Albert 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 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 CA175426A publication Critical patent/CA175426A/fr
Expired legal-status Critical Current

Links

CA000175426A 1916-01-20 1916-01-20 Systeme d'echange telephonique Expired CA175426A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA175426T 1916-01-20

Publications (1)

Publication Number Publication Date
CA175426A true CA175426A (fr) 1917-02-27

Family

ID=45295079

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000175426A Expired CA175426A (fr) 1916-01-20 1916-01-20 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA175426A (fr)

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