YIELDABLE MINE SUPPORT,申请号ZA19840002708-传众专利搜索

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发明名称	YIELDABLE MINE SUPPORT
摘要
申请公布号	ZA8402708(B)	申请公布日期	1984.11.28
申请号	ZA19840002708	申请日期	1984.04.12
申请人	H L & H TIMBER PRODUCTS (PROPRIETARY) LIMITED	发明人	WILLEM JOHANNES PRETORIUS
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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