DEVICE FOR ROOF CONTROL IN MINE WORKINGS,申请号SU19802884426-传众专利搜索

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发明名称	DEVICE FOR ROOF CONTROL IN MINE WORKINGS
摘要
申请公布号	SU877047(A1)	申请公布日期	1981.10.30
申请号	SU19802884426	申请日期	1980.02.19
申请人	INST GORNOGO DELA SO AN SSSR	发明人	GORBUNOV VALERIJ F,SU;NAGORNYJ VLADIMIR D,SU;ELLER ALEKSANDR F,SU;SCHASTLIVTSEV EVGENIJ L,SU
分类号	E21D13/04;(IPC1-7):E21D13/04	主分类号	E21D13/04
代理机构		代理人
主权项
地址

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