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International Standard Electric Corp
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International Standard Electric Corp
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Application grantedgrantedCritical
Publication of FR1140733ApublicationCriticalpatent/FR1140733A/en
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
B61L5/062—Wiring diagrams
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR1140733D1955-02-081956-02-02
Control circuit for three-phase motor
ExpiredFR1140733A
(en)