Подвесная крепь для крутопадающих пластов,申请号SU19470376359-传众专利搜索

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发明名称	Подвесная крепь для крутопадающих пластов
摘要
申请公布号	SU81422(A1)	申请公布日期	1948.11.30
申请号	SU19470376359	申请日期	1947.07.25
申请人	PSHENKO M.M.	发明人	PSHENKO M.M.
分类号	E21D19/02;E21D23/04	主分类号	E21D19/02
代理机构		代理人
主权项
地址

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