Drilldown: Patents

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Patents > Year filed: 1917 & National tech categories: FR 6.4 & Number of figures: 4-6

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airplane (6) · design (5) · shock-absorbers (4) · None (3) · subsystem (3) · lift (3) · landing (3) · wings (2) · sustentation (2) · hybrid (2) · propulsion (2) · suspension (2) · biplane (2) · ascension (2) · wheels (2)
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