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经营范围
发明名称
Well Pipe Suspension Apparatus.
摘要
申请公布号
GB1195996(A)
申请公布日期
1970.06.24
申请号
GB19690048775
申请日期
1967.09.11
申请人
ROCKWELL MANUFACTURING COMPANY
发明人
分类号
E21B33/043
主分类号
E21B33/043
代理机构
代理人
主权项
地址
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