CA424754A - Systeme de signalisation - Google Patents

Systeme de signalisation

Info

Publication number
CA424754A
CA424754A CA424754A CA424754DA CA424754A CA 424754 A CA424754 A CA 424754A CA 424754 A CA424754 A CA 424754A CA 424754D A CA424754D A CA 424754DA CA 424754 A CA424754 A CA 424754A
Authority
CA
Canada
Prior art keywords
signalling system
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
CA424754A
Other languages
English (en)
Inventor
Alexander Bredehoft Harold
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 CA424754A publication Critical patent/CA424754A/fr
Expired legal-status Critical Current

Links

CA424754A Systeme de signalisation Expired CA424754A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA424754T

Publications (1)

Publication Number Publication Date
CA424754A true CA424754A (fr) 1944-12-26

Family

ID=35535769

Family Applications (1)

Application Number Title Priority Date Filing Date
CA424754A Expired CA424754A (fr) Systeme de signalisation

Country Status (1)

Country Link
CA (1) CA424754A (fr)

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