E01B 3/04

Sub-Class

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Description

Class  E01B : PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS


Subclass 3/04: Transverse or longitudinal sleepers (for switches or crossings E01B 7/22); Other means resting directly on the ballastway for supporting rails made from wood (drying or impregnating B27K) Means for preventing cleaving

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