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发明名称
Drag bucket
摘要
申请公布号
US2359817(A)
申请公布日期
1944.10.10
申请号
US19430496753
申请日期
1943.07.30
申请人
ASHLEY GERALD J
发明人
ASHLEY GERALD J.
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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