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发明名称
A METHOD OF REINFORCING THE END OF HYDRAULIC PACKER SEALING MEMBER
摘要
申请公布号
SU1680946(A1)
申请公布日期
1991.09.30
申请号
SU19894747446
申请日期
1989.10.09
申请人
VNII BUROVOJ TEKHNIKI
发明人
VANIFATEV VLADIMIR I,SU;TSYRIN YURIJ Z,SU;YANKULEV STANISLAV S,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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