FR463122A - Traverse de chemin de fer faite en un mélange d'amiante et de ciment ainsi que procédé et installation mécanique pour sa fabrication
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Traverse de chemin de fer faite en un mélange d'amiante et de ciment ainsi que procédé et installation mécanique pour sa fabrication
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E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
E01B3/44—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from other materials only if the material is essential
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FR463122D1913-10-011913-10-01Traverse de chemin de fer faite en un mélange d'amiante et de ciment ainsi que procédé et installation mécanique pour sa fabrication
ExpiredFR463122A
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