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经营范围
发明名称
Perfectionnements aux hélices et propulseurs
摘要
申请公布号
FR841200(A)
申请公布日期
1939.05.12
申请号
FRD841200
申请日期
1938.07.26
申请人
UNITED AIRCRAFT CORPORATION
发明人
分类号
B64C11/24
主分类号
B64C11/24
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代理人
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