Drilldown: Patents

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Patents > Year filed: 1910 - 1919 & Year granted: 1919 & Office : DE or GR

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airplane (11) · subsystem (7) · propulsion (5) · frame (5) · wings (4) · biplane (4) · propeller (4) · navigation (4) · LTA (3) · human-powered (2) · Tragfläche (2) · steering (2) · safety (2) · motor (2) · military (2) · instrument (2) · None (2) · fuselage (2) · flapping (2)
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Showing below up to 31 results in range #1 to #31.

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