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经营范围
发明名称
Drag bucket and control therefor
摘要
申请公布号
US2629190(A)
申请公布日期
1953.02.24
申请号
US19480000516
申请日期
1948.01.05
申请人
PACIFIC COAST ENGINEERING COMPANY
发明人
BERNER LEO
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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