Combined tapping and countersinking tool,申请号US19530363621-传众专利搜索

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发明名称	Combined tapping and countersinking tool
摘要
申请公布号	US2797421(A)	申请公布日期	1957.07.02
申请号	US19530363621	申请日期	1953.06.23
申请人	GRINNELL CORPORATION	发明人	WILLIAMS JAMES HOWARD;HALL JOHN MERRIL
分类号	B23B5/16;B23B51/10;B23G5/20	主分类号	B23B5/16
代理机构		代理人
主权项
地址

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