METHOD OF SUPPORTING MINE WORKING ROOF,申请号SU19782693215-传众专利搜索

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发明名称	METHOD OF SUPPORTING MINE WORKING ROOF
摘要
申请公布号	SU723167(A1)	申请公布日期	1980.03.25
申请号	SU19782693215	申请日期	1978.11.03
申请人	MOLDAVSKIJ NI PK I STROITELNYKH MATERIALOV	发明人	SPIVAKOV FELIKS P,SU;ZANEVCHIK YAROSLAV A,SU;LADYZHENSKIJ ISAK L,SU
分类号	E21D20/00;(IPC1-7):E21D20/00	主分类号	E21D20/00
代理机构		代理人
主权项
地址

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