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发明名称
LINING FOR LARGE-DIAMETER HOLE
摘要
申请公布号
SU1601377(A1)
申请公布日期
1990.10.23
申请号
SU19884370869
申请日期
1988.01.04
申请人
SHARKEVICH VLADIMIR V,SU;BAGDASAROV SHAGEN B,SU;BRYLOV SERGEJ A,SU;TOLOKNOV IGOR,SU
发明人
SHARKEVICH VLADIMIR V,SU;BAGDASAROV SHAGEN B,SU;BRYLOV SERGEJ A,SU;TOLOKNOV IGOR I,SU
分类号
E21D5/00;E21B7/20
主分类号
E21D5/00
代理机构
代理人
主权项
地址
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