Condenser finning machine,申请号US19390290568-传众专利搜索

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发明名称	Condenser finning machine
摘要
申请公布号	US2247730(A)	申请公布日期	1941.07.01
申请号	US19390290568	申请日期	1939.08.17
申请人	SERVEL, INC.	发明人	O'BRIEN WILLIAM L.
分类号	B21D53/08	主分类号	B21D53/08
代理机构		代理人
主权项
地址

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