BIT FOR ROTARY ROCK DRILL,申请号JP19780079174-传众专利搜索

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发明名称	BIT FOR ROTARY ROCK DRILL
摘要
申请公布号	JPS5414302(A)	申请公布日期	1979.02.02
申请号	JP19780079174	申请日期	1978.06.29
申请人	DRESSER IND	发明人	SAMUERU RII PENII;ROBAATO DEERU KURAMON
分类号	E21B10/22;E21B10/24;F16N19/00	主分类号	E21B10/22
代理机构		代理人
主权项
地址

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