Drilldown: Patents

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Patents > Year filed: 1909 & Office: DE & Number of text pages: 2-3

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None (4) · Louis Blériot (3) · Otto Koch (2) · Gustav Mees (2)
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None (9) · airplane (9) · propulsion (9) · LTA (8) · frame (8) · propeller (7) · design (7) · Tragfläche (5) · balloon (5) · wings (4) · stability (4) · flapping (4) · Flugzeug (4) · control (3) · whole (3) · navigation (3) · airfoil (3) · subsystem (3) · helicopter (3)
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