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Patents > IPCs : IPC B64C3/38 or IPC B64C33/00 & Number of diagram pages: 3-20000000

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Office:
Inventors:
Julius Uherkovich de Uherkocz (2) · Richard A. Engler (2) · Émile Pupin (2)
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Applicant person:
Julius Uherkovich de Uherkócz (2) · Émile Pupin (2) · Richard A. Engler (2)
Applicant is inventor:
Tech fields:
airplane (22) · flapping (12) · frame (10) · None (9) · stability (9) · ornithopter (9) · propulsion (8) · design (7) · navigation (6) · wings (6) · Lift (5) · construction (5) · HTA (4) · airfoil (4) · sustentation (4)
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None (5)
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Citations from after 1930:
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