BOREKRONEHODE FOR BROENNBORING,申请号NO19920004772-传众专利搜索

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发明名称	BOREKRONEHODE FOR BROENNBORING
摘要
申请公布号	NO924772(D0)	申请公布日期	1992.12.10
申请号	NO19920004772	申请日期	1992.12.10
申请人	FREYER, RUNE	发明人	FREYER, RUNE
分类号	E21B;E21B4/04;(IPC1-7):E21B/	主分类号	E21B
代理机构		代理人
主权项
地址

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