发明名称 APPARATUS FOR CONSOLIDATING A TRACK BED
摘要 Apparatus for consolidating a track bed comprising a vehicle movable along the track with at least one pressure-applying wheel carried thereby, the engagement of the wheel with the track bed being controlled to rollingly consolidate the track bed as the vehicle moves.
申请公布号 US3638578(A) 申请公布日期 1972.02.01
申请号 USD3638578 申请日期 1969.04.16
申请人 ROBEL & CO. 发明人 HEINRICH HELGEMEIR
分类号 E01B27/13;E01C19/29;(IPC1-7):E01B27/16 主分类号 E01B27/13
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