CA182429A - Exchange telephonique - Google Patents

Exchange telephonique

Info

Publication number
CA182429A
CA182429A CA000182429A CA182429DA CA182429A CA 182429 A CA182429 A CA 182429A CA 000182429 A CA000182429 A CA 000182429A CA 182429D A CA182429D A CA 182429DA CA 182429 A CA182429 A CA 182429A
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
CA000182429A
Other languages
English (en)
Inventor
Charles Lane Goodrum
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 CA182429A publication Critical patent/CA182429A/fr
Expired legal-status Critical Current

Links

CA000182429A 1917-03-02 1917-03-02 Exchange telephonique Expired CA182429A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA182429T 1917-03-02

Publications (1)

Publication Number Publication Date
CA182429A true CA182429A (fr) 1918-02-19

Family

ID=45302081

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000182429A Expired CA182429A (fr) 1917-03-02 1917-03-02 Exchange telephonique

Country Status (1)

Country Link
CA (1) CA182429A (fr)

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