Mine support system.,申请号ZA19940009794-传众专利搜索

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发明名称	Mine support system.
摘要
申请公布号	ZA9409794(B)	申请公布日期	1995.08.18
申请号	ZA19940009794	申请日期	1994.12.08
申请人	ERASMUS ANDRE JAN	发明人	ANDRE JAN ERASMUS
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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