FRICTIONAL MINING PROP,申请号PL19970319517-传众专利搜索

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发明名称	FRICTIONAL MINING PROP
摘要
申请公布号	PL183724(B1)	申请公布日期	2002.07.31
申请号	PL19970319517	申请日期	1997.04.15
申请人	BARECKI ZBIGNIEW	发明人	BARECKI ZBIGNIEW
分类号	E21D15/00;E21D15/28	主分类号	E21D15/00
代理机构		代理人
主权项
地址

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