Drilldown: Patents

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Patents > Year granted: 1883 & Supplementary to patent: None & Citations from after 1930: None

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None (18) · Georg Wellner (6) · Gros (2)
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None (29) · propulsion (16) · LTA (12) · navigation (7) · stability (3) · propeller (3) · balloon (3) · control (2) · sail (2) · military (2) · frame (2) · airship (2) · balloons (2)
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Showing below up to 66 results in range #1 to #66.

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