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Patents > Inventor country: ES & First filing : No or None & Citations from after 1930: None

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LTA (18) · balloon (11) · propulsion (7) · navigation (6) · subsystem (6) · stability (6) · aerodynamics (5) · hydrodynamics (5) · design (4) · frame (4) · balloons (4) · rudder (3) · nacelle (3) · safety (3) · None (3)
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Showing below up to 34 results in range #1 to #34.

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