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发明名称
Anordning ved Flyvemaskiner med parvis i hinanden indgribende Løfteskruer.
摘要
申请公布号
DK65621(C)
申请公布日期
1947.09.08
申请号
DK19400001885
申请日期
1939.02.11
申请人
ANTON FLETTNER
发明人
ANTON FLETTNER
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主分类号
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