Mine support for supporting a preload bag,申请号ZA19970009546-传众专利搜索

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发明名称	Mine support for supporting a preload bag
摘要
申请公布号	ZA9709546(B)	申请公布日期	1999.01.08
申请号	ZA19970009546	申请日期	1997.10.24
申请人	LIN YAO-CHANG	发明人	YAO-CHANG LIN
分类号	E21D	主分类号	E21D
代理机构		代理人
主权项
地址

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