Drilldown: Patents

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Patents > Inventor country: DE & Granted: None

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None (5) · airplane (5) · propulsion (4) · propeller (4) · LTA (4) · propellers (3) · navigation (3) · design (3) · hybrid (2) · stability (2) · piloting (2) · parachute (2) · military (2) · marine (2) · wings (2) · frame (2)
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