CA317093A - Systeme de signalisation a deux voies - Google Patents

Systeme de signalisation a deux voies

Info

Publication number
CA317093A
CA317093A CA317093A CA317093DA CA317093A CA 317093 A CA317093 A CA 317093A CA 317093 A CA317093 A CA 317093A CA 317093D A CA317093D A CA 317093DA CA 317093 A CA317093 A CA 317093A
Authority
CA
Canada
Prior art keywords
signalling system
way signalling
way
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
CA317093A
Other languages
English (en)
Inventor
C. Mathes Robert
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA317093A publication Critical patent/CA317093A/fr
Expired legal-status Critical Current

Links

CA317093A Systeme de signalisation a deux voies Expired CA317093A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA317093T

Publications (1)

Publication Number Publication Date
CA317093A true CA317093A (fr) 1931-11-10

Family

ID=35277648

Family Applications (1)

Application Number Title Priority Date Filing Date
CA317093A Expired CA317093A (fr) Systeme de signalisation a deux voies

Country Status (1)

Country Link
CA (1) CA317093A (fr)

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