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发明名称
DREDGING APPARATUS
摘要
申请公布号
CA378462(A)
申请公布日期
1938.12.20
申请号
CAD378462
申请日期
申请人
GUS E. BECKER;HERBERT H. HOPKINS
发明人
HERBERT H. HOPKINS;GUS E. BECKER
分类号
主分类号
代理机构
代理人
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