MINE ROOF SUPPORTS WITH A LEMNISCATE MECHANISM,申请号PL19950101969U-传众专利搜索

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发明名称	MINE ROOF SUPPORTS WITH A LEMNISCATE MECHANISM
摘要
申请公布号	PL56525(Y1)	申请公布日期	1998.10.30
申请号	PL19950101969U	申请日期	1995.01.26
申请人	MATUSZYK JAN	发明人	MATUSZYK JAN
分类号	E21D23/04;(IPC1-7):E21D23/04	主分类号	E21D23/04
代理机构		代理人
主权项
地址

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