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经营范围
发明名称
Well apparatus
摘要
申请公布号
GB1107902(A)
申请公布日期
1968.03.27
申请号
GB19650018133
申请日期
1965.04.29
申请人
CAMERON IRON WORKS, INC.
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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