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Patents > Tech fields : ornithopter or stability & Number of figures: 12-13

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Inventors:
Edmund Sparmann (4) · Karl Willems (3) · Gaston Sencier (2) · Adolphe-François-Joseph Doutre (2) · Jules Materne (2) · Gustave Plaisant (2) · William Whitney Christmas (2) · John P. Tarbox (2)
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None (4) · Edmund Sparmann (4) · Karl Willems (3) · Gustave Plaisant (2) · Jules Materne (2) · Adolphe-François-Joseph Doutre (2)
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None (9)
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