CA173902A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA173902A
CA173902A CA000173902A CA173902DA CA173902A CA 173902 A CA173902 A CA 173902A CA 000173902 A CA000173902 A CA 000173902A CA 173902D A CA173902D A CA 173902DA CA 173902 A CA173902 A CA 173902A
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
CA000173902A
Other languages
French (fr)
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 CA173902A publication Critical patent/CA173902A/en
Expired legal-status Critical Current

Links

CA000173902A 1915-12-17 1915-12-17 Telephone exchange system Expired CA173902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA173902T 1915-12-17

Publications (1)

Publication Number Publication Date
CA173902A true CA173902A (en) 1916-12-12

Family

ID=45293555

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000173902A Expired CA173902A (en) 1915-12-17 1915-12-17 Telephone exchange system

Country Status (1)

Country Link
CA (1) CA173902A (en)

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