Perfectionnements apportés aux hélices, notamment à celles à pas variable,申请号FRD692503-传众专利搜索

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发明名称	Perfectionnements apportés aux hélices, notamment à celles à pas variable
摘要
申请公布号	FR692503(A)	申请公布日期	1930.11.06
申请号	FRD692503	申请日期	1930.03.21
申请人		发明人	LALLEMAND FERDINAND-EMILE
分类号	B64C11/34	主分类号	B64C11/34
代理机构		代理人
主权项
地址

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