Drill steel guide,申请号US19420432151-传众专利搜索

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发明名称	Drill steel guide
摘要
申请公布号	US2365686(A)	申请公布日期	1944.12.26
申请号	US19420432151	申请日期	1942.02.24
申请人	SULLIVAN MACHINERY COMPANY	发明人	OSGOOD CHARLES F.
分类号	E21B19/24	主分类号	E21B19/24
代理机构		代理人
主权项
地址

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