Drilldown: Patents

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Patents > Year filed: 1800 - 1899 & Grant date: 1850 - 1859 & Number of figures: None

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None (3) · Hiellard (3) · DELAHAYE (2) · Eugène-Joseph Varangot (2) · Marc (2) · Prosper Meller‎ (2)
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LTA (50) · navigation (29) · propulsion (7) · balloon (4) · military (4) · None (3) · safety (3) · projectile (3) · parachute (2) · gas (2) · dirigibles (2) · balloons (2) · aviation (2) · infrastructure (2) · whole (2)
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