Drilldown: Patents

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Patents > Year granted: 1850 - 1859 & Grant date: 1800 - 1899 & National tech categories : USPC 244/3.28 or None & Number of claims: None

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None (27) · Hiellard (3) · Carl Armbruster (2) · Louis de Cherrier (2) · DELAHAYE (2) · Frédéric-Marie Piret (2)
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LTA (37) · None (27) · navigation (25) · propulsion (12) · safety (4) · gas (3) · balloon (3) · parachute (3) · stability (2) · projectile (2) · military (2)
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Showing below up to 81 results in range #1 to #81.

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