Lock washer for countersunk screws,申请号US19300471975-传众专利搜索

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发明名称	Lock washer for countersunk screws
摘要
申请公布号	US1865132(A)	申请公布日期	1932.06.28
申请号	US19300471975	申请日期	1930.07.31
申请人	SHAKEPROOF LOCK WASHER COMPANY	发明人	OLSON CARL G.
分类号	F16B43/00	主分类号	F16B43/00
代理机构		代理人
主权项
地址

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