POWERED JUNCTION MINING ROOF SUPPORT,申请号SU19772515821-传众专利搜索

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发明名称	POWERED JUNCTION MINING ROOF SUPPORT
摘要
申请公布号	SU732540(A1)	申请公布日期	1980.05.05
申请号	SU19772515821	申请日期	1977.08.09
申请人	VNI PK UGOLNYJ INSTITUT	发明人	FOMIN VLADIMIR ,SU;NIKOLAEV GENNADIJ V,SU;BRILLIANTOV VALERIJ G,SU;PODKORYTOV EVGENIJ ,SU;BUTOROV IVAN S,SU
分类号	E21D11/36;E21D23/00;(IPC1-7):E21D11/36	主分类号	E21D11/36
代理机构		代理人
主权项
地址

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