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发明名称
MINE WORKING SUPPORT
摘要
申请公布号
SU1506128(A1)
申请公布日期
1989.09.07
申请号
SU19874345881
申请日期
1987.12.17
申请人
V ZAOCHNYJ POLT INSTITUT
发明人
VOROBEV ANATOLIJ N,SU;NESTERENKO IRINA V,SU;ZHEMANOV ALEKSANDR G,SU;KHRESHCHIK LEONID N,SU
分类号
E21D11/14
主分类号
E21D11/14
代理机构
代理人
主权项
地址
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