Roller cutter boring drill,申请号US19290349773-传众专利搜索

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发明名称	Roller cutter boring drill
摘要
申请公布号	US1860953(A)	申请公布日期	1932.05.31
申请号	US19290349773	申请日期	1929.03.25
申请人	CHICAGO PNEUMATIC TOOL COMPANY	发明人	REED CLARENCE E.
分类号	E21B10/24	主分类号	E21B10/24
代理机构		代理人
主权项
地址

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