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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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Application filed by Telefonaktiebolaget LM Ericsson ABfiledCriticalTelefonaktiebolaget LM Ericsson AB
Application grantedgrantedCritical
Publication of FR642852ApublicationCriticalpatent/FR642852A/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L19/00—Arrangements for interlocking between points and signals by means of a single interlocking device, e.g. central control
B61L19/06—Interlocking devices having electrical operation
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR642852D1926-10-141927-10-10Perfectionnements aux machines d'enclenchement électriques pour la signalisation dans les chemins de fer
ExpiredFR642852A
(fr)