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发明名称
HOLE-SEALING ARRANGEMENT
摘要
申请公布号
SU1183658(A1)
申请公布日期
1985.10.07
申请号
SU19843683772
申请日期
1984.01.02
申请人
KUZNETSKIJ NI PK I PO DOBYCHE POLEZNYKH ISKOPAEMYKH OTKRYTYM SPOSOBOM
发明人
MATRENIN VLADIMIR A,SU
分类号
E21B33/03;(IPC1-7):E21B33/03
主分类号
E21B33/03
代理机构
代理人
主权项
地址
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