Perfectionnements aux hélices aériennes,申请号FRD981452-传众专利搜索

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发明名称	Perfectionnements aux hélices aériennes
摘要
申请公布号	FR981452(A)	申请公布日期	1951.05.28
申请号	FRD981452	申请日期	1943.04.12
申请人		发明人	HAW JAKOB
分类号	B64C11/16;B64C11/20	主分类号	B64C11/16
代理机构		代理人
主权项
地址

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