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Patents > Inventors : Alfred E. Wunderlich or Glenn Hammond Curtiss or Thomas Sloper & National tech categories : BE K or None

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propellers (41) · Airplane (40) · hybrid (40) · None (35) · LTA (35) · sustentation (8) · rarefaction (7) · ascension (7) · propulsion (5) · marine (5) · frame (4) · hydroplane (4) · helicopter (4) · wings (4) · hydroaeroplane (3)
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