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发明名称
Hélice à pas variable en vol
摘要
申请公布号
FR768302(A)
申请公布日期
1934.08.03
申请号
FRD768302
申请日期
1933.04.24
申请人
SOCIETE D'ETUDES POUR L'AVIATION
发明人
分类号
B64C11/44
主分类号
B64C11/44
代理机构
代理人
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