IMPROVEMENTS IN OR RELATING TO PIT PROPS,申请号ZA19770007255-传众专利搜索

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发明名称	IMPROVEMENTS IN OR RELATING TO PIT PROPS
摘要
申请公布号	ZA7707255(B)	申请公布日期	1979.07.25
申请号	ZA19770007255	申请日期	1977.12.05
申请人	MINDEV LTD	发明人	RIEMANN K
分类号	E21D15/14;E21D15/44;E21D15/54	主分类号	E21D15/14
代理机构		代理人
主权项
地址

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