Apparatus for working metal,申请号US19310582025-传众专利搜索

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发明名称	Apparatus for working metal
摘要
申请公布号	US1952841(A)	申请公布日期	1934.03.27
申请号	US19310582025	申请日期	1931.12.19
申请人	TUBE REDUCING CORPORATION	发明人	COE GEORGE B.
分类号	B21B21/00	主分类号	B21B21/00
代理机构		代理人
主权项
地址

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