IMPROVEMENTS IN OR RELATING TO A WIPER ARRANGEMENT FOR CLEANING EARTH DRILLING TOOLS,申请号GB19700006685-传众专利搜索

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发明名称	IMPROVEMENTS IN OR RELATING TO A WIPER ARRANGEMENT FOR CLEANING EARTH DRILLING TOOLS
摘要
申请公布号	GB1261302(A)	申请公布日期	1972.01.26
申请号	GB19700006685	申请日期	1970.02.11
申请人	DELMAG-MASCHINENFABRIK REINHOLD DORNFELD;DELMAG-VWALTUNGSGESELLSCHAFT MIT BESCHRAENKTER HAFTUNG	发明人
分类号	E21B12/06	主分类号	E21B12/06
代理机构		代理人
主权项
地址

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