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AUGUSTE TIERCE
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AUGUSTE TIERCE
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Application filed by AUGUSTE TIERCEfiledCriticalAUGUSTE TIERCE
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Publication of FR403011ApublicationCriticalpatent/FR403011A/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
B61L5/12—Visible signals
B61L5/14—Form signals, e.g. semaphore arms
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Engineering & Computer Science
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Mechanical Engineering
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FR403011D1909-05-131909-05-13
Single channel signal system
ExpiredFR403011A
(en)