WORKING OF EARTH,申请号ZA19850006967-传众专利搜索

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发明名称	WORKING OF EARTH
摘要
申请公布号	ZA8506967(B)	申请公布日期	1986.04.30
申请号	ZA19850006967	申请日期	1985.09.11
申请人	ALGOA OIL AND PIPELINE SERVICES (PROPRIETARY) LIMITED	发明人	THEODOR FREDRICH JOHANNES VOLKER
分类号	E21C;E21D	主分类号	E21C
代理机构		代理人
主权项
地址

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