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发明名称
Hjælm til Formindskelse af Bevægelsesmodstanden i et luftformet eller flydende Medium.
摘要
申请公布号
DK42749(C)
申请公布日期
1930.08.11
申请号
DKD42749
申请日期
1928.04.24
申请人
PATENTUDNYTTERE VAPROG PATENT-VERWERTUNGSGESELLSCHAFT MIT BESCHRAENKTER HAFTUNG ZUR VERWERTUNG VON VACUUM-PROPELLER-ERFINDUNGEN
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主分类号
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