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发明名称
Hélice portante dont les pales ont des pas variables et son application pour la réalisation d'un aérodyne
摘要
申请公布号
FR999814(A)
申请公布日期
1952.02.05
申请号
FRD999814
申请日期
1946.01.09
申请人
发明人
JAYER PIERRE;CASSY RAYMOND
分类号
B64C27/54
主分类号
B64C27/54
代理机构
代理人
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地址
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