Drilldown: Patents

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Patents > Office : AT or BE or ES or HU & Grant date: 1800 - 1899

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LTA (25) · balloon (12) · navigation (11) · propulsion (10) · design (7) · Dirigibles (6) · frame (5) · gas (4) · propellers (4) · balloons (3) · Blimp (3) · motors (3) · ascension (3) · hydrogen (3) · Airship (3)
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Showing below up to 34 results in range #1 to #34.

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