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发明名称
Apparatus for conditioning drilling muds
摘要
申请公布号
US2359923(A)
申请公布日期
1944.10.10
申请号
US19390305651
申请日期
1939.11.22
申请人
LAWLESS GRANVILLE L
发明人
LAWLESS GRANVILLE L.
分类号
E21B21/06
主分类号
E21B21/06
代理机构
代理人
主权项
地址
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