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发明名称
SECTION OF POWER-DRIVEN MINE ROOF SUPPORT
摘要
申请公布号
SU568722(A1)
申请公布日期
1977.08.15
申请号
SU19731954598
申请日期
1973.08.07
申请人
PODMOSKOVNYJ NI PK UGOLNYJ INSTITUT
发明人
EROKHIN ALEKSEJ ,SU;YAKOVLEV NIKOLAJ ,SU;ROMANOV PAVEL D,SU;KHORIN VLADIMIR N,SU;ZAIKIN EVGENIJ K,SU
分类号
E21D23/04;(IPC1-7):E21D23/04
主分类号
E21D23/04
代理机构
代理人
主权项
地址
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