Drilldown: Patents

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Patents > Year granted: 1920 - 1929 & Tech fields : paddle-wheel or wings

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None (9) · Ernst Heinkel (6) · Jules Gastambide (3) · Alexander Albert Holle (3) · Robert Gastambide (3) · Hans Josef Goebbel (2) · Richard A. Engler (2) · Detlev Zickler (2) · John Arthur Weis (2)
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None (12) · Ernst Heinkel (6) · Alexander Albert Holle (3) · Robert Gastambide (3) · Jules Gastambide (3) · Hans Josef Goebbel (2) · John Arthur Weis (2) · Richard A. Engler (2) · Detlev Zickler (2)
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None (21)
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Showing below up to 68 results in range #1 to #68.

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