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发明名称
Vorrichtung zur Verbesserung des Propulsionswirkungsgrades von Schiffsantrieben
摘要
申请公布号
DE546477(C)
申请公布日期
1932.03.16
申请号
DE1929SC91485D
申请日期
1929.09.08
申请人
LUEDER SCHRIEVER
发明人
分类号
B63H1/28
主分类号
B63H1/28
代理机构
代理人
主权项
地址
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