CA390716A - Light signal - Google Patents

Light signal

Info

Publication number
CA390716A
CA390716A CA390716A CA390716DA CA390716A CA 390716 A CA390716 A CA 390716A CA 390716 A CA390716 A CA 390716A CA 390716D A CA390716D A CA 390716DA CA 390716 A CA390716 A CA 390716A
Authority
CA
Canada
Prior art keywords
light signal
light
signal
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
CA390716A
Other languages
French (fr)
Inventor
B. Wells Wesley
K. Lockhart William
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
Union Switch and Signal Inc
Publication date
Application granted granted Critical
Publication of CA390716A publication Critical patent/CA390716A/en
Expired legal-status Critical Current

Links

CA390716A Light signal Expired CA390716A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA390716T

Publications (1)

Publication Number Publication Date
CA390716A true CA390716A (en) 1940-08-13

Family

ID=35398287

Family Applications (1)

Application Number Title Priority Date Filing Date
CA390716A Expired CA390716A (en) Light signal

Country Status (1)

Country Link
CA (1) CA390716A (en)

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