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Patents > Year granted: 1920 - 1929 & National tech categories : HU V/h or IT 8 & Number of figures: 2-3

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airplane (15) · design (6) · Airship (5) · aerodynamics (5) · construction (5) · subsystem (5) · Motors (4) · Biplane (4) · frame (4) · parachutes (3) · wings (3) · military (3) · lift (3) · propellers (3) · LTA (3) · HTA (2) · cooling (2) · stability (2) · control (2) · monoplane (2)
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