Perfectionnements relatifs aux pales d'hélices et à leurs procédés de fabrication,申请号FRD830838-传众专利搜索

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发明名称	Perfectionnements relatifs aux pales d'hélices et à leurs procédés de fabrication
摘要
申请公布号	FR830838(A)	申请公布日期	1938.08.10
申请号	FRD830838	申请日期	1937.12.15
申请人	UNITED AIRCRAFT CORPORATION	发明人
分类号	B21D53/78	主分类号	B21D53/78
代理机构		代理人
主权项
地址

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