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发明名称
Procédé de stabilisation et de propulsion applicable aux hélices sustentatrices d'hélicoptères
摘要
申请公布号
FR816979(A)
申请公布日期
1937.08.21
申请号
FRD816979
申请日期
1937.01.28
申请人
发明人
HENRI BERGIER
分类号
B64C27/32
主分类号
B64C27/32
代理机构
代理人
主权项
地址
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