Drilldown: Patents

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Patents > Publication date: 1920 - 1929 & Number of text pages: 4-6 & Number of claims: 5-50

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airplane (11) · motors (5) · propellers (5) · design (4) · propulsion (4) · frame (4) · construction (3) · military (3) · chassis (3) · aiming (2) · projectile (2) · hélice‎ (2) · gas (2) · electricity (2) · lift (2) · wing (2) · stability (2) · airfoil (2) · whole (2) · automatic stability (2)
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