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经营范围
发明名称
Well cleaning apparatus
摘要
申请公布号
GB9506797(D0)
申请公布日期
1995.05.24
申请号
GB19950006797
申请日期
1995.04.01
申请人
ROTARY DRILLING SUPPLIES EUROPE LTD
发明人
分类号
E21B37/02
主分类号
E21B37/02
代理机构
代理人
主权项
地址
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