CA384895A - Systeme de signalisation - Google Patents

Systeme de signalisation

Info

Publication number
CA384895A
CA384895A CA384895A CA384895DA CA384895A CA 384895 A CA384895 A CA 384895A CA 384895 A CA384895 A CA 384895A CA 384895D A CA384895D A CA 384895DA CA 384895 A CA384895 A CA 384895A
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
CA384895A
Other languages
English (en)
Inventor
J. Fitch Clyde
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Publication date
Application granted granted Critical
Publication of CA384895A publication Critical patent/CA384895A/fr
Expired legal-status Critical Current

Links

CA384895A Systeme de signalisation Expired CA384895A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA384895T

Publications (1)

Publication Number Publication Date
CA384895A true CA384895A (fr) 1939-10-31

Family

ID=35390118

Family Applications (1)

Application Number Title Priority Date Filing Date
CA384895A Expired CA384895A (fr) Systeme de signalisation

Country Status (1)

Country Link
CA (1) CA384895A (fr)

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