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经营范围
发明名称
CASING VALVE
摘要
申请公布号
SU1601347(A1)
申请公布日期
1990.10.23
申请号
SU19884438866
申请日期
1988.06.08
申请人
IVANO-FRANKOVSKIJ I NEFTI GAZA
发明人
EVCHUK LYUBOMIR V,SU;TARAEVSKIJ STEPAN I,SU;MALISEVICH VASILIJ V,SU;IVANCHUK VLADIMIR YA,SU
分类号
E21B33/14;E21B34/10
主分类号
E21B33/14
代理机构
代理人
主权项
地址
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