CA420849A - Railway traffic controlling apparatus - Google Patents

Railway traffic controlling apparatus

Info

Publication number
CA420849A
CA420849A CA420849A CA420849DA CA420849A CA 420849 A CA420849 A CA 420849A CA 420849 A CA420849 A CA 420849A CA 420849D A CA420849D A CA 420849DA CA 420849 A CA420849 A CA 420849A
Authority
CA
Canada
Prior art keywords
controlling apparatus
railway traffic
traffic controlling
railway
traffic
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
CA420849A
Other languages
French (fr)
Inventor
E. Staples Crawford
R. Kemmerer Ralph
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.)
Hitachi Rail STS USA Inc
Original Assignee
Ralph R Kemmerer
Union Switch and Signal Inc
Publication date
Application granted granted Critical
Publication of CA420849A publication Critical patent/CA420849A/en
Expired legal-status Critical Current

Links

CA420849A Railway traffic controlling apparatus Expired CA420849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA420849T

Publications (1)

Publication Number Publication Date
CA420849A true CA420849A (en) 1944-06-13

Family

ID=35531792

Family Applications (1)

Application Number Title Priority Date Filing Date
CA420849A Expired CA420849A (en) Railway traffic controlling apparatus

Country Status (1)

Country Link
CA (1) CA420849A (en)

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