ROTARY BALLING BIT FOR BALLING DEEP WELL,申请号JP19810167312-传众专利搜索

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发明名称	ROTARY BALLING BIT FOR BALLING DEEP WELL
摘要
申请公布号	JPS57100288(A)	申请公布日期	1982.06.22
申请号	JP19810167312	申请日期	1981.10.21
申请人	KURISUTENSEN INC	发明人	RAINAA YURUGENSU
分类号	E21B10/42;E21B10/43;E21B10/46;E21B10/56;E21B10/567	主分类号	E21B10/42
代理机构		代理人
主权项
地址

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