Drilldown: Patents

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Patents > Year granted: 1920 - 1929 & Tech fields : LTA or Rudder

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None (11) · Ernst Heinkel (2) · Reinhold Richter (2) · René-Joseph-Ghislain Straunard (2) · Ralph Hazlett Upson (2) · Adolphe Clément-Bayard (2) · Anton Flettner (2)
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Showing below up to 59 results in range #1 to #59.

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