CA476488A - Systemes de signalisation a pulsations electriques - Google Patents

Systemes de signalisation a pulsations electriques

Info

Publication number
CA476488A
CA476488A CA476488A CA476488DA CA476488A CA 476488 A CA476488 A CA 476488A CA 476488 A CA476488 A CA 476488A CA 476488D A CA476488D A CA 476488DA CA 476488 A CA476488 A CA 476488A
Authority
CA
Canada
Prior art keywords
electrical impulse
signalling systems
impulse signalling
systems
electrical
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
CA476488A
Other languages
English (en)
Inventor
Edmund Gray Richard
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 Standard Electric Corp
Original Assignee
International Standard Electric Corp
Publication date
Application granted granted Critical
Publication of CA476488A publication Critical patent/CA476488A/fr
Expired legal-status Critical Current

Links

CA476488A Systemes de signalisation a pulsations electriques Expired CA476488A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA476488T

Publications (1)

Publication Number Publication Date
CA476488A true CA476488A (fr) 1951-08-28

Family

ID=35616117

Family Applications (1)

Application Number Title Priority Date Filing Date
CA476488A Expired CA476488A (fr) Systemes de signalisation a pulsations electriques

Country Status (1)

Country Link
CA (1) CA476488A (fr)

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