Self-tapping screw,申请号US19410405557-传众专利搜索

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发明名称	Self-tapping screw
摘要
申请公布号	US2302689(A)	申请公布日期	1942.11.24
申请号	US19410405557	申请日期	1941.08.05
申请人	GENERAL ELECTRIC COMPANY	发明人	FARRELL JAMES J.
分类号	B21K1/56;F16B25/00	主分类号	B21K1/56
代理机构		代理人
主权项
地址

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