Drilldown: Patents

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Patents > National tech categories : FR 6.3 or USPC 416/241R & Number of diagram pages: 2-3

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LTA (16) · propulsion (14) · navigation (11) · construction (9) · aerostat (8) · airship (5) · ascension (5) · dirigible (5) · texture (5) · safety (4) · design (4) · stability (4) · propellers (4) · steering (4) · Airplane (4) · Parachutes (3) · control (3) · sustentation (3) · balloon (3) · propeller (3)
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