Drilldown: Patents

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Patents > Office : LU or NL or NO or RU & Related to aircraft : -1 or 1 or 1908-12-31 or Yes & Number of text pages: 3

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None (2) · Alexander Albert Holle (2)
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LTA (8) · airplane (8) · frame (8) · design (4) · wings (4) · navigation (4) · balloon (4) · flying machine (4) · aerodynamics (3) · rudder (3) · metal (3) · flapping (3) · hybrid (3) · car (3) · dirigible (2) · helicopter (2) · projectile (2) · propeller (2) · lift (2) · stability (2)
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