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发明名称
Two-wheeled scraper
摘要
申请公布号
US3090139(A)
申请公布日期
1963.05.21
申请号
US19610143114
申请日期
1961.10.05
申请人
HANCOCK JAMES E
发明人
HANCOCK JAMES E.
分类号
E02F3/64
主分类号
E02F3/64
代理机构
代理人
主权项
地址
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