Tap, and method of use in making lock nuts,申请号US19380224725-传众专利搜索

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发明名称	Tap, and method of use in making lock nuts
摘要
申请公布号	US2179157(A)	申请公布日期	1939.11.07
申请号	US19380224725	申请日期	1938.08.13
申请人	RUSSELL BURDSALL & WARD BOLT & NUT COMPANY	发明人	MACDONALD ROBERT A.
分类号	B23G5/06	主分类号	B23G5/06
代理机构		代理人
主权项
地址

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