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经营范围
发明名称
Improvements in rotary wing systems for aircraft
摘要
申请公布号
GB650460(A)
申请公布日期
1951.02.28
申请号
GB19470022730
申请日期
1947.08.15
申请人
OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AERONAUTIQUES (O.N.E.R.A.)
发明人
分类号
B64C11/00
主分类号
B64C11/00
代理机构
代理人
主权项
地址
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