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经营范围
发明名称
Earth scooping structure
摘要
申请公布号
US2142919(A)
申请公布日期
1939.01.03
申请号
US19370149970
申请日期
1937.06.23
申请人
RICHWINE HUGH K
发明人
RICHWINE HUGH K.
分类号
E02F3/76;E02F5/02;E02F7/00
主分类号
E02F3/76
代理机构
代理人
主权项
地址
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