发明授权
US3603226A Apparatus for compacting a mass of granular material 失效
用于压制大量颗粒材料的装置

Apparatus for compacting a mass of granular material
摘要:
This invention relates to methods of and apparatus for compacting ground, roads and the like. The preferred apparatus comprises a road roller having small diameter ground engaging rolls rolling around a cylindrical backup roll located at the front of the road roller.
信息查询
0/0