Reamer for earth-boring apparatus,申请号US19270176980-传众专利搜索

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发明名称	Reamer for earth-boring apparatus
摘要
申请公布号	US1792869(A)	申请公布日期	1931.02.17
申请号	US19270176980	申请日期	1927.03.21
申请人	CHICAGO PNEUMATIC TOOL COMPANY	发明人	REED CLARENCE E.
分类号	E21B10/34	主分类号	E21B10/34
代理机构		代理人
主权项
地址

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