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发明名称
METHOD OF WINNING STONE FOR WALLS IN UNDERGROUND CONDITIONS
摘要
申请公布号
SU1357577(A1)
申请公布日期
1987.12.07
申请号
SU19864022435
申请日期
1986.02.18
申请人
VG PK I "GIPROSTROMMASHINA"
发明人
TEPLYAKOV BORIS N,SU;ZINGERMAN SEMEN I,SU;AJZENBERG SEMEN E,SU
分类号
E21C47/10
主分类号
E21C47/10
代理机构
代理人
主权项
地址
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