Drilldown: Patents

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Patents > Grant date: 1920 - 1929 & Patent agent: None & National tech categories: HU V/h

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airplane (28) · design (14) · Construction (13) · airship (11) · aerodynamics (9) · Motors (9) · frame (9) · propellers (9) · wings (8) · biplane (8) · Subsystem (7) · LTA (6) · military (5) · HTA (4) · safety (4) · parachutes (3) · lift (3) · texture (3) · propulsion (3) · chassis (3)
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None (14)
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Showing below up to 62 results in range #1 to #62.

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