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Patents > Filing date: 1860 - 1869 & National tech categories : FR 2.1 or FR 5

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Baron de Rovérié de Cabrières (2) · de Louvrie (2) · Nicholas de Telescheff (2) · Michniewicz (2)
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balloon (14) · navigation (14) · LTA (8) · propulsion (6) · Aerostat (6) · aerial navigation (5) · Hybrid (4) · None (3) · aerial vessel (3) · dirigible (2) · Propellers (2) · Aerial Navigation* (2) · Avion (2) · fuel (2) · Safety (2) · motors (2)
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