CA325840A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA325840A
CA325840A CA325840A CA325840DA CA325840A CA 325840 A CA325840 A CA 325840A CA 325840 A CA325840 A CA 325840A CA 325840D A CA325840D A CA 325840DA CA 325840 A CA325840 A CA 325840A
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
CA325840A
Other languages
French (fr)
Inventor
Balli Mcdavitt Marcellus
Charles Schwantes Paul
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
Publication date
Application granted granted Critical
Publication of CA325840A publication Critical patent/CA325840A/en
Expired legal-status Critical Current

Links

CA325840A Telephone exchange system Expired CA325840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA325840T

Publications (1)

Publication Number Publication Date
CA325840A true CA325840A (en) 1932-09-06

Family

ID=35288210

Family Applications (1)

Application Number Title Priority Date Filing Date
CA325840A Expired CA325840A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA325840A (en)

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