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发明名称
POWERED ROOF SUPPORT FOR EXCAVATING COAD BEDS AND FILLING-IN EXCAVATED SPACE
摘要
申请公布号
SU819352(A1)
申请公布日期
1981.04.07
申请号
SU19782725560
申请日期
1978.12.29
申请人
VNI PK UGOLNYJ INSTITUT
发明人
TRUKHIN PETR M,SU;SAMUSEV VLADIMIR F,SU;SHMIDT VIKTOR F,SU
分类号
E21D23/00;(IPC1-7):E21D23/00
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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