CA490497A - Appareil de protection de trafic - Google Patents

Appareil de protection de trafic

Info

Publication number
CA490497A
CA490497A CA490497A CA490497DA CA490497A CA 490497 A CA490497 A CA 490497A CA 490497 A CA490497 A CA 490497A CA 490497D A CA490497D A CA 490497DA CA 490497 A CA490497 A CA 490497A
Authority
CA
Canada
Prior art keywords
protection apparatus
traffic protection
traffic
protection
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
CA490497A
Other languages
English (en)
Inventor
Frederick T. Fereday, Sr.
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 CA490497A publication Critical patent/CA490497A/fr
Expired legal-status Critical Current

Links

CA490497A Appareil de protection de trafic Expired CA490497A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA490497T

Publications (1)

Publication Number Publication Date
CA490497A true CA490497A (fr) 1953-02-10

Family

ID=35630233

Family Applications (1)

Application Number Title Priority Date Filing Date
CA490497A Expired CA490497A (fr) Appareil de protection de trafic

Country Status (1)

Country Link
CA (1) CA490497A (fr)

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