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Patents > CPCs : CPC B64C2700/6274 or CPC B64D11/0689 & Number of diagram pages: 2-5

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Inventors:
None (2) · Douglas Dobbins (2)
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Applicant person:
John Day De Prez (2) · Douglas Dobbins (2)
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Applicant is inventor:
Tech fields:
None (18) · Airplane (11) · Helicopter (8) · Propellers (7) · Hybrid (7) · Propulsion (6) · Design (5) · Control (5) · Ascension (4) · lift (3) · motors (3) · Construction (3) · Frame (3)
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