Self tapping screw having grid-like bearing surface,申请号US19600053523-传众专利搜索

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发明名称	Self tapping screw having grid-like bearing surface
摘要
申请公布号	US3120254(A)	申请公布日期	1964.02.04
申请号	US19600053523	申请日期	1960.09.01
申请人	THE LAMSON & SESSIONS COMPANY	发明人	WALTERMIRE WILLIAM G.;BREED ARTHUR R.
分类号	F16B33/00;F16B39/282	主分类号	F16B33/00
代理机构		代理人
主权项
地址

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