CA180278A - Echange telephonique - Google Patents

Echange telephonique

Info

Publication number
CA180278A
CA180278A CA000180278A CA180278DA CA180278A CA 180278 A CA180278 A CA 180278A CA 000180278 A CA000180278 A CA 000180278A CA 180278D A CA180278D A CA 180278DA CA 180278 A CA180278 A CA 180278A
Authority
CA
Canada
Prior art keywords
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
CA000180278A
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 CA180278A publication Critical patent/CA180278A/fr
Expired legal-status Critical Current

Links

CA000180278A 1916-05-22 1916-05-22 Echange telephonique Expired CA180278A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA180278T 1916-05-22

Publications (1)

Publication Number Publication Date
CA180278A true CA180278A (fr) 1917-11-06

Family

ID=45299931

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000180278A Expired CA180278A (fr) 1916-05-22 1916-05-22 Echange telephonique

Country Status (1)

Country Link
CA (1) CA180278A (fr)

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