Drilldown: Patents

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Patents > Office: HU & Grant date: 1920 - 1929 & Related to aircraft: yes

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Airplane (27) · design (14) · construction (14) · airship (11) · Frame (9) · Motors (9) · propellers (9) · aerodynamics (9) · Biplane (7) · subsystem (6) · military (6) · LTA (6) · wings (6) · safety (4)
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None (13)
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Showing below up to 61 results in range #1 to #61.

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