Drilldown: Patents

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Patents > Office : BE or ES or FR or SE & Inventor country : CS or FR & National tech categories: BE K & First filing: None & Number of figures: None

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propellers (11) · design (9) · airplane (9) · propulsion (7) · LTA (6) · control (5) · frame (4) · flapping (3) · dirigibles (3) · motors (3) · HTA (3) · rigid (3) · subsystem (3) · ascension (3)
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Showing below up to 34 results in range #1 to #34.

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