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经营范围
发明名称
Dredging
摘要
申请公布号
GB2094854(A)
申请公布日期
1982.09.22
申请号
GB19810008234
申请日期
1981.03.17
申请人
CONTISIERRA AG
发明人
分类号
E02F1/00;E02F3/18;E02F3/20;E02F5/22;E02F7/06;E02F9/02;E21C45/00;(IPC1-7):E21C45/00
主分类号
E02F1/00
代理机构
代理人
主权项
地址
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