CA401690A - Telegraph exchange system - Google Patents

Telegraph exchange system

Info

Publication number
CA401690A
CA401690A CA401690A CA401690DA CA401690A CA 401690 A CA401690 A CA 401690A CA 401690 A CA401690 A CA 401690A CA 401690D A CA401690D A CA 401690DA CA 401690 A CA401690 A CA 401690A
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
CA401690A
Other languages
French (fr)
Inventor
Stewart Kinkead Fullerton
John Singer Fred
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 CA401690A publication Critical patent/CA401690A/en
Expired legal-status Critical Current

Links

CA401690A Telegraph exchange system Expired CA401690A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA401690T

Publications (1)

Publication Number Publication Date
CA401690A true CA401690A (en) 1941-12-23

Family

ID=35412136

Family Applications (1)

Application Number Title Priority Date Filing Date
CA401690A Expired CA401690A (en) Telegraph exchange system

Country Status (1)

Country Link
CA (1) CA401690A (en)

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