A NON-HYDRAULIC RAPID-YIELD PROP,申请号ZA19810005167-传众专利搜索

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发明名称	A NON-HYDRAULIC RAPID-YIELD PROP
摘要
申请公布号	ZA8105167(B)	申请公布日期	1982.08.25
申请号	ZA19810005167	申请日期	1981.07.28
申请人	RAND MINES LTD	发明人	ORTLEPP WILLIAM DAVID
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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