CA473334A - Systemes de disques de fermeture - Google Patents

Systemes de disques de fermeture

Info

Publication number
CA473334A
CA473334A CA473334A CA473334DA CA473334A CA 473334 A CA473334 A CA 473334A CA 473334 A CA473334 A CA 473334A CA 473334D A CA473334D A CA 473334DA CA 473334 A CA473334 A CA 473334A
Authority
CA
Canada
Prior art keywords
signalling systems
coded signalling
coded
systems
signalling
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
CA473334A
Other languages
English (en)
Inventor
H. Nicholson Frank
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 CA473334A publication Critical patent/CA473334A/fr
Expired legal-status Critical Current

Links

CA473334A Systemes de disques de fermeture Expired CA473334A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA473334T

Publications (1)

Publication Number Publication Date
CA473334A true CA473334A (fr) 1951-05-01

Family

ID=35607305

Family Applications (1)

Application Number Title Priority Date Filing Date
CA473334A Expired CA473334A (fr) Systemes de disques de fermeture

Country Status (1)

Country Link
CA (1) CA473334A (fr)

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