Metal-spinning machine,申请号US19280256324-传众专利搜索

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发明名称	Metal-spinning machine
摘要
申请公布号	US1757824(A)	申请公布日期	1930.05.06
申请号	US19280256324	申请日期	1928.02.23
申请人	GRAVER CORPORATION	发明人	JR. JAMES L. ADAMS,
分类号	B21D22/18	主分类号	B21D22/18
代理机构		代理人
主权项
地址

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