Drilldown: Patents

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Patents > Publication date: 1920 - 1929 & National tech categories: DE 77h.5

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airplane (42) · frame (29) · design (23) · construction (21) · wings (16) · control (14) · biplane (11) · rudder (8) · Fuselage (8) · navigation (6) · aerodynamics (5) · subsystem (4) · stability (4) · propeller (4) · motors (4)
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Showing below up to 69 results in range #1 to #69.

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