发明名称 Yard roller
摘要 A yard roller having a frame traversable over ground to be rolled by a drum rotatably mounted on the frame and arranged engaging ground over which the frame traverses. A power unit is mounted on the frame and connected to the drum for rotating the drum and moving the frame together with the drum.
申请公布号 US4208151(A) 申请公布日期 1980.06.17
申请号 US19780961149 申请日期 1978.11.16
申请人 CROSS, ANDREW C 发明人 CROSS, ANDREW C
分类号 E01C19/26;(IPC1-7):E01C19/26 主分类号 E01C19/26
代理机构 代理人
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