Orienting core drill,申请号US19280255962-传众专利搜索

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发明名称	Orienting core drill
摘要
申请公布号	US1773915(A)	申请公布日期	1930.08.26
申请号	US19280255962	申请日期	1928.02.21
申请人	E. J. LAGOMARSINO	发明人	LYDON PATRICK JOSEPH
分类号	E21B25/16	主分类号	E21B25/16
代理机构		代理人
主权项
地址

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