FR815315A - Procédé permettant d'assurer la sécurité des passages à niveau et dispositif de protection destiné à la mise en oeuvre de ce procédé
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Procédé permettant d'assurer la sécurité des passages à niveau et dispositif de protection destiné à la mise en oeuvre de ce procédé
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.)
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Carl Zeiss AG
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Carl Zeiss AG
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Application grantedgrantedCritical
Publication of FR815315ApublicationCriticalpatent/FR815315A/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L29/00—Safety means for rail/road crossing traffic
B61L29/02—Guards or obstacles for preventing access to the route
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR815315D1935-12-231936-12-21Procédé permettant d'assurer la sécurité des passages à niveau et dispositif de protection destiné à la mise en oeuvre de ce procédé
ExpiredFR815315A
(fr)