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Patents > Tech fields : Propellers or design & Grant date: 1919

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None (13) · Oszkár Asbóth (4) · Louis Blériot (4) · Jane-Françoise-Mathilde Giraud (2) · John Edward Thompson (2) · Henri-Joseph-Léon-Marie de la Chevardière de la Grandville (2) · Reinhold Richter (2)
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