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经营范围
发明名称
Пакер двустороннего действия
摘要
申请公布号
SU133020(A1)
申请公布日期
1960.11.30
申请号
SU19600659389
申请日期
1960.03.19
申请人
DOLININ N.V.;IONOV A.P.;MASICH V.I.;POKLONOV I.S.
发明人
DOLININ N.V.;IONOV A.P.;MASICH V.I.;POKLONOV I.S.
分类号
E21B33/129;E21B33/128
主分类号
E21B33/129
代理机构
代理人
主权项
地址
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