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发明名称
ROOF SUPPORT SECTION HYDRAULIC SYSTEM
摘要
申请公布号
SU754084(A1)
申请公布日期
1980.08.07
申请号
SU19772516120
申请日期
1977.08.08
申请人
PODMOSKOVNYJ NI PK UGOLNYJ INSTITUT
发明人
POLEJ LEONID S,SU;MIKHAJLOV IGOR F,SU;NUZHNOV PETR N,SU
分类号
E21D23/16;(IPC1-7):E21D23/16
主分类号
E21D23/16
代理机构
代理人
主权项
地址
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