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发明名称
HOLE-BOTTOM SLURRY COLLECTOR
摘要
申请公布号
SU1280108(A1)
申请公布日期
1986.12.30
申请号
SU19843702302
申请日期
1984.02.16
申请人
VNII BUROVOJ TEKHNIKI
发明人
INDRUPSKIJ DAVID I,SU;BERGSHTEJN OLEG YU,SU;VELIKOSELSKIJ MARK A,SU;VOROZHBITOV MARAT I,SU
分类号
E21B31/03
主分类号
E21B31/03
代理机构
代理人
主权项
地址
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