Disk bit and reamer,申请号US19300447787-传众专利搜索

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发明名称	Disk bit and reamer
摘要
申请公布号	US1867545(A)	申请公布日期	1932.07.19
申请号	US19300447787	申请日期	1930.04.28
申请人	AKEYSON SWAN M	发明人	AKEYSON SWAN M.
分类号	E21B10/12;E21B10/28	主分类号	E21B10/12
代理机构		代理人
主权项
地址

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