CA316181A - Telegraph exchange system - Google Patents

Telegraph exchange system

Info

Publication number
CA316181A
CA316181A CA316181A CA316181DA CA316181A CA 316181 A CA316181 A CA 316181A CA 316181 A CA316181 A CA 316181A CA 316181D A CA316181D A CA 316181DA CA 316181 A CA316181 A CA 316181A
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
CA316181A
Other languages
French (fr)
Inventor
Sanford Vernam Gilford
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 CA316181A publication Critical patent/CA316181A/en
Expired legal-status Critical Current

Links

CA316181A Telegraph exchange system Expired CA316181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA316181T

Publications (1)

Publication Number Publication Date
CA316181A true CA316181A (en) 1931-10-13

Family

ID=35275509

Family Applications (1)

Application Number Title Priority Date Filing Date
CA316181A Expired CA316181A (en) Telegraph exchange system

Country Status (1)

Country Link
CA (1) CA316181A (en)

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