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经营范围
发明名称
A METHOD OF AND APPARATUS FOR TRENCHING
摘要
申请公布号
GB9007959(D0)
申请公布日期
1990.06.06
申请号
GB19900007959
申请日期
1990.04.07
申请人
NORTHERN OCEAN SERVICES LIMITED
发明人
分类号
E02F5/10;E02F5/14
主分类号
E02F5/10
代理机构
代理人
主权项
地址
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