Drilldown: Patents

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Patents > Tech fields: flapping & Assigned to: None & Number of figures: 8-10

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Hermann Hassenbach (5) · Franz Xaver Wels (3) · Hermann John Reiche (3) · William Francis Dugins (2) · Gustav Lilienthal (2) · George McMullen (2) · Ferdinand Lanz (2)
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None (18)
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