Drilldown: Patents

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Patents > Office: GB & Patent agent : Armengaud jeune or Victor J. Evans or None & National tech categories : FR 6.3 or GB 4 propel & steer or None & Number of figures: 1-2

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propulsion (5) · stability (4) · LTA (3) · None (3) · airplane (3) · Airship (2) · propellers (2) · helicopter (2) · lift (2) · frame (2) · parachute (2) · ascension (2) · propeller (2) · kite (2) · structure (2) · ballonet (2) · hybrid (2)
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