SPLIT BUCKET TYPE ROTARY DRILLING APPARATUS,申请号JP19840095751-传众专利搜索

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发明名称	SPLIT BUCKET TYPE ROTARY DRILLING APPARATUS
摘要
申请公布号	JPS60242292(A)	申请公布日期	1985.12.02
申请号	JP19840095751	申请日期	1984.05.15
申请人	KITANAKA KATSUMI	发明人	KITANAKA KATSUMI
分类号	E21B11/00;E02D5/44;E02F5/20;E21B7/00;E21B10/32	主分类号	E21B11/00
代理机构		代理人
主权项
地址

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