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发明名称
Hélice à variation automatique du pas
摘要
申请公布号
FR721659(A)
申请公布日期
1932.03.07
申请号
FRD721659
申请日期
1930.11.14
申请人
发明人
LAVAUD DIMITRI SENSAUD DE
分类号
B64C11/34
主分类号
B64C11/34
代理机构
代理人
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