CA507041A - Directional relay control circuits for railway signaling systems - Google Patents

Directional relay control circuits for railway signaling systems

Info

Publication number
CA507041A
CA507041A CA507041A CA507041DA CA507041A CA 507041 A CA507041 A CA 507041A CA 507041 A CA507041 A CA 507041A CA 507041D A CA507041D A CA 507041DA CA 507041 A CA507041 A CA 507041A
Authority
CA
Canada
Prior art keywords
control circuits
relay control
signaling systems
railway signaling
directional relay
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
CA507041A
Other languages
French (fr)
Inventor
E. Staples Crawford
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 CA507041A publication Critical patent/CA507041A/en
Expired legal-status Critical Current

Links

CA507041A Directional relay control circuits for railway signaling systems Expired CA507041A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA507041T

Publications (1)

Publication Number Publication Date
CA507041A true CA507041A (en) 1954-11-02

Family

ID=35652975

Family Applications (1)

Application Number Title Priority Date Filing Date
CA507041A Expired CA507041A (en) Directional relay control circuits for railway signaling systems

Country Status (1)

Country Link
CA (1) CA507041A (en)

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