Method of making structural units,申请号US19350008428-传众专利搜索

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发明名称	Method of making structural units
摘要
申请公布号	US2131883(A)	申请公布日期	1938.10.04
申请号	US19350008428	申请日期	1935.02.27
申请人	ROCK-OLA MANUFACTURING CORPORATION	发明人	BECKER FRED F.
分类号	B21D53/00;F16B5/00	主分类号	B21D53/00
代理机构		代理人
主权项
地址

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