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发明名称
Устройство для измерения уровня жидкости в между трубном пространстве буровых скважин
摘要
申请公布号
SU44154(A1)
申请公布日期
1935.08.31
申请号
SU19340156692
申请日期
1934.11.05
申请人
DERPGOLTS V.F.
发明人
DERPGOLTS V.F.
分类号
G01F23/04;E21B47/04;G01F23/24
主分类号
G01F23/04
代理机构
代理人
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