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经营范围
发明名称
MULTIPLE CHAMBER EARTH FORMATION FLUID SAMPLER
摘要
申请公布号
US3611799(A)
申请公布日期
1971.10.12
申请号
USD3611799
申请日期
1969.10.01
申请人
DRESSER INDUSTRIES INC.
发明人
MIKE DAVIS
分类号
E21B49/10;(IPC1-7):E21B43/00
主分类号
E21B49/10
代理机构
代理人
主权项
地址
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