CA423703A - Syysteme de signalisation en deux directions - Google Patents

Syysteme de signalisation en deux directions

Info

Publication number
CA423703A
CA423703A CA423703A CA423703DA CA423703A CA 423703 A CA423703 A CA 423703A CA 423703 A CA423703 A CA 423703A CA 423703D A CA423703D A CA 423703DA CA 423703 A CA423703 A CA 423703A
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
CA423703A
Other languages
English (en)
Inventor
Conant Dickieson Alton
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
Bell Telephone Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA423703A publication Critical patent/CA423703A/fr
Expired legal-status Critical Current

Links

CA423703A Syysteme de signalisation en deux directions Expired CA423703A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA423703T

Publications (1)

Publication Number Publication Date
CA423703A true CA423703A (fr) 1944-11-07

Family

ID=35534711

Family Applications (1)

Application Number Title Priority Date Filing Date
CA423703A Expired CA423703A (fr) Syysteme de signalisation en deux directions

Country Status (1)

Country Link
CA (1) CA423703A (fr)

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