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发明名称
PROTECTIVE SUPPORT FOR UPHILL WORKINGS
摘要
申请公布号
SU1684531(A1)
申请公布日期
1991.10.15
申请号
SU19874351184
申请日期
1987.11.11
申请人
VNI PK UGOLNYJ INSTITUT
发明人
SUKHORUKOV VLADIMIR A,SU;SELYANINOV IGOR B,SU;YAKOVLEV NIKOLAJ I,SU;BARSUKOV IVAN I,SU;SUKHOVOLSKIJ STEPAN N,SU
分类号
E21D5/00
主分类号
E21D5/00
代理机构
代理人
主权项
地址
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