CA290631A - Light signal - Google Patents

Light signal

Info

Publication number
CA290631A
CA290631A CA290631A CA290631DA CA290631A CA 290631 A CA290631 A CA 290631A CA 290631 A CA290631 A CA 290631A CA 290631D A CA290631D A CA 290631DA CA 290631 A CA290631 A CA 290631A
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
CA290631A
Other languages
French (fr)
Inventor
W. Fisher Arthur
B. Wells Wesley
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 CA290631A publication Critical patent/CA290631A/en
Expired legal-status Critical Current

Links

CA290631A Light signal Expired CA290631A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA290631T

Publications (1)

Publication Number Publication Date
CA290631A true CA290631A (en) 1929-06-18

Family

ID=35227443

Family Applications (1)

Application Number Title Priority Date Filing Date
CA290631A Expired CA290631A (en) Light signal

Country Status (1)

Country Link
CA (1) CA290631A (en)

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