AUGER BIT AND MANUFACTURE THEREOF,申请号JP19870213837-传众专利搜索

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发明名称	AUGER BIT AND MANUFACTURE THEREOF
摘要
申请公布号	JPS6458795(A)	申请公布日期	1989.03.06
申请号	JP19870213837	申请日期	1987.08.26
申请人	ISHIZUKA CHITOMO	发明人	ISHIZUKA CHITOMO
分类号	E21B10/44;E21B10/46	主分类号	E21B10/44
代理机构		代理人
主权项
地址

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