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经营范围
发明名称
Dispositif de commande de deux hélices coaxiales
摘要
申请公布号
FR777930(A)
申请公布日期
1935.03.05
申请号
FRD777930
申请日期
1933.11.20
申请人
发明人
SAHEURS ALBERT, GASTON
分类号
B64D35/06
主分类号
B64D35/06
代理机构
代理人
主权项
地址
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