Method of making lock washers,申请号US19270240392-传众专利搜索

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发明名称	Method of making lock washers
摘要
申请公布号	US1845272(A)	申请公布日期	1932.02.16
申请号	US19270240392	申请日期	1927.12.16
申请人	SHAKEPROOF LOCK WASHER COMPANY, INCORPORATED	发明人	HOSKING RICHARD T.
分类号	B21D53/20	主分类号	B21D53/20
代理机构		代理人
主权项
地址

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