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发明名称
Excavating apparatus
摘要
申请公布号
US2249070(A)
申请公布日期
1941.07.15
申请号
US19380190729
申请日期
1938.02.16
申请人
WEIMER RAYMOND S
发明人
WEIMER RAYMOND S.
分类号
E02F3/60
主分类号
E02F3/60
代理机构
代理人
主权项
地址
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