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Patents > CPCs: CPC B64C33/00 & Number of text pages: 3-9

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Inventors:
Franz Xaver Wels (2)
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None (3) · Franz Xaver Wels (2)
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Tech fields:
flapping (20) · ornithopter (15) · wings (12) · frame (12) · None (11) · propulsion (10) · hybrid (10) · airplane (9) · design (8) · stability (7) · HTA (6) · glider (4)
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