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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 FR679480ApublicationCriticalpatent/FR679480A/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
B61L5/065—Construction of driving mechanism
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR679480D1928-08-041929-07-29Perfectionnements dans les dispositifs pour la manoeuvre des aiguilles
ExpiredFR679480A
(fr)