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发明名称
Well cementing
摘要
申请公布号
US2162261(A)
申请公布日期
1939.06.13
申请号
US19360066780
申请日期
1936.03.03
申请人
LAYNE LESLIE A
发明人
LAYNE LESLIE A.
分类号
E21B33/14
主分类号
E21B33/14
代理机构
代理人
主权项
地址
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