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发明名称
Perfectionnements aux hélices aériennes
摘要
申请公布号
FR719758(A)
申请公布日期
1932.02.10
申请号
FRD719758
申请日期
1930.10.03
申请人
发明人
DARCHE PAUL-JOSEPH-HUDES
分类号
B64C11/00
主分类号
B64C11/00
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代理人
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