Drilldown: Patents

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Patents > Year filed: 1911 & Office : DE or GR

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wings (5) · airplane (5) · design (5) · subsystem (5) · motor (4) · frame (4) · Tragfläche (4) · airfoil (3) · piloting (3) · stability (3) · propulsion (3) · communications (2) · LTA (2) · whole (2) · wing (2) · flapping (2) · navigation (2)
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