BIT FOR EXCAVATION AND MANUFACTURE THEREOF,申请号JP19830046843-传众专利搜索

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发明名称	BIT FOR EXCAVATION AND MANUFACTURE THEREOF
摘要
申请公布号	JPS59173478(A)	申请公布日期	1984.10.01
申请号	JP19830046843	申请日期	1983.03.18
申请人	TONE BORING:KK	发明人	SATOU TOSHIHIKO
分类号	E21B10/50;E21B10/46	主分类号	E21B10/50
代理机构		代理人
主权项
地址

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