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发明名称
PACKER SEALING ASSEMBLY
摘要
申请公布号
SU1399449(A1)
申请公布日期
1988.05.30
申请号
SU19864047224
申请日期
1986.03.31
申请人
SEVERO-KAVKAZSKIJ GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
ROMAN IVAN V,SU;ARSENEV ADOLF K,SU;LITVINOV ANDREJ V,SU;CHUMACHENKO ANATOLIJ D,SU
分类号
E21B33/12
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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