Heating element for sheet-metal shaping machines,申请号US19440550611-传众专利搜索

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发明名称	Heating element for sheet-metal shaping machines
摘要
申请公布号	US2432463(A)	申请公布日期	1947.12.09
申请号	US19440550611	申请日期	1944.08.22
申请人	DOUGLAS AIRCRAFT COMPANY, INC.	发明人	WATSON JACK H.
分类号	B21D22/04	主分类号	B21D22/04
代理机构		代理人
主权项
地址

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