Drilldown: Patents

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Patents > Inventor country: AH & Granted: Yes & Patent agent: None & CPCs: None

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Tech fields:
airplane (8) · LTA (8) · frame (7) · subsystem (5) · balloon (5) · aerodynamics (4) · navigation (4) · propulsion (4) · dirigible (3) · Propellers (3) · stability (3) · whole (3)
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