CA344290A - Telegraph exchange system - Google Patents

Telegraph exchange system

Info

Publication number
CA344290A
CA344290A CA344290A CA344290DA CA344290A CA 344290 A CA344290 A CA 344290A CA 344290 A CA344290 A CA 344290A CA 344290D A CA344290D A CA 344290DA CA 344290 A CA344290 A CA 344290A
Authority
CA
Canada
Prior art keywords
exchange system
telegraph exchange
telegraph
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
CA344290A
Other languages
French (fr)
Inventor
Bradley Dickinson Allan
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 CA344290A publication Critical patent/CA344290A/en
Expired legal-status Critical Current

Links

CA344290A Telegraph exchange system Expired CA344290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA344290T

Publications (1)

Publication Number Publication Date
CA344290A true CA344290A (en) 1934-08-28

Family

ID=35315563

Family Applications (1)

Application Number Title Priority Date Filing Date
CA344290A Expired CA344290A (en) Telegraph exchange system

Country Status (1)

Country Link
CA (1) CA344290A (en)

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