CA389511A - Telegraph exchange system - Google Patents

Telegraph exchange system

Info

Publication number
CA389511A
CA389511A CA389511A CA389511DA CA389511A CA 389511 A CA389511 A CA 389511A CA 389511 A CA389511 A CA 389511A CA 389511D A CA389511D A CA 389511DA CA 389511 A CA389511 A CA 389511A
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
CA389511A
Other languages
French (fr)
Inventor
Bonavita Blanton William
Barton White Roy
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.)
Western Union Telegraph Co
Original Assignee
Western Union Telegraph Co
Publication date
Application granted granted Critical
Publication of CA389511A publication Critical patent/CA389511A/en
Expired legal-status Critical Current

Links

CA389511A Telegraph exchange system Expired CA389511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA389511T

Publications (1)

Publication Number Publication Date
CA389511A true CA389511A (en) 1940-06-18

Family

ID=35397121

Family Applications (1)

Application Number Title Priority Date Filing Date
CA389511A Expired CA389511A (en) Telegraph exchange system

Country Status (1)

Country Link
CA (1) CA389511A (en)

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