Perfectionnements apportés aux hélices aériennes à deux pas,申请号FRD862852-传众专利搜索

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发明名称	Perfectionnements apportés aux hélices aériennes à deux pas
摘要
申请公布号	FR862852(A)	申请公布日期	1941.03.18
申请号	FRD862852	申请日期	1940.01.11
申请人		发明人	ALGARSSON
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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