METHOD OF AUTOMATIC GAS PROTECTION OF STOPING,申请号SU19772497918-传众专利搜索

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发明名称	METHOD OF AUTOMATIC GAS PROTECTION OF STOPING
摘要
申请公布号	SU637537(A1)	申请公布日期	1978.12.15
申请号	SU19772497918	申请日期	1977.06.14
申请人	VNI PK UGOLNYJ I "KNIUI";KARAGANDINSKIJ POLT INSTITUT	发明人	GRASHCHENKOV NIKOLAJ F,SU;OSIPOV PETR ,SU
分类号	E21F5/00;(IPC1-7):E21F5/00	主分类号	E21F5/00
代理机构		代理人
主权项
地址

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