Drilldown: Patents

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Patents > Year granted: 1890 - 1899 & Tech fields : Airplane or propeller

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Inventors:
Richard Czygan (4) · Clément Ader (3) · Edward Joel Pennington (3) · Stewart Cairncross (3) · Dr. Bernhard Reinhard Beenen (3) · Hubbell Duane Hurlbut (2) · ALAUX (2) · Hermann Ganswindt (2) · Gustav Koch (2) · Georg Gabrielii (2)
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None (47) · Richard Czygan (3) · Georg Gabrielii (2) · Clément Ader (2) · Dr. Bernhard Reinhard Beenen (2)
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Showing below up to 108 results in range #1 to #108.

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