Drilldown: Patents

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Patents > Inventor country : RO or None & Filing date: 1900 - 1999 & Number of claims: 7-30000000

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design (11) · airplane (8) · Propellers (7) · wings (5) · control (5) · stability (5) · Propulsion (4) · landing (4) · None (4) · construction (4) · rudder (3) · frame (3) · fuselage (3) · steering (3)
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