Method of making ornamental rings,申请号US19520280723-传众专利搜索

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发明名称	Method of making ornamental rings
摘要
申请公布号	US2750630(A)	申请公布日期	1956.06.19
申请号	US19520280723	申请日期	1952.04.05
申请人	MEYER MAXIMILIAN C	发明人	MEYER MAXIMILIAN C.
分类号	B21D53/44	主分类号	B21D53/44
代理机构		代理人
主权项
地址

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