Drilldown: Patents

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Patents > Year filed: 1912 & Office : AT or BE & National tech categories: BE K & Number of figures: None

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airplane (12) · wings (4) · propellers (4) · hybrid (4) · stability (4) · design (3) · LTA (3) · propulsion (3) · Hydroplane (3) · steering (3) · navigation (3) · control (3) · construction (3)
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Showing below up to 21 results in range #1 to #21.

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