Method of restoring drills,申请号US19280301188-传众专利搜索

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发明名称	Method of restoring drills
摘要
申请公布号	US1841635(A)	申请公布日期	1932.01.19
申请号	US19280301188	申请日期	1928.08.22
申请人	SALMON JAMES P	发明人	SALMON JAMES P.
分类号	B23B51/12	主分类号	B23B51/12
代理机构		代理人
主权项
地址

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