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E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
E01B27/04—Removing the ballast; Machines therefor, whether or not additionally adapted for taking-up ballast
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FR1047476D1952-01-031952-01-03Perfectionnements aux machines à dégarnir le ballast des voies ferrées
ExpiredFR1047476A
(fr)