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经营范围
发明名称
Hélice à ailes multiples en tandem à pas variable pour machines volantes
摘要
申请公布号
FR911111(A)
申请公布日期
1946.06.28
申请号
FRD911111
申请日期
1945.01.02
申请人
发明人
GOBEREAU ROBERT-RICHARD
分类号
B64C11/30
主分类号
B64C11/30
代理机构
代理人
主权项
地址
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