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CA906591A - Logic circuitry for railroad crossing systems - Google Patents

Logic circuitry for railroad crossing systems

Info

Publication number
CA906591A
CA906591A CA906591A CA906591DA CA906591A CA 906591 A CA906591 A CA 906591A CA 906591 A CA906591 A CA 906591A CA 906591D A CA906591D A CA 906591DA CA 906591 A CA906591 A CA 906591A
Authority
CA
Canada
Prior art keywords
logic circuitry
railroad crossing
crossing systems
systems
railroad
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
CA906591A
Inventor
W. Wetmore Arthur
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.)
SPX Technologies Inc
Original Assignee
General Signal Corp
Publication date
Application granted granted Critical
Publication of CA906591A publication Critical patent/CA906591A/en
Expired legal-status Critical Current

Links

CA906591A Logic circuitry for railroad crossing systems Expired CA906591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA906591T

Publications (1)

Publication Number Publication Date
CA906591A true CA906591A (en) 1972-08-01

Family

ID=36414350

Family Applications (1)

Application Number Title Priority Date Filing Date
CA906591A Expired CA906591A (en) Logic circuitry for railroad crossing systems

Country Status (1)

Country Link
CA (1) CA906591A (en)

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