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Patents > CPCs: CPC B64C2700/6274 & Number of claims: 3-40 & Number of diagram pages: 1-2

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None (2) · Carl Hanschke (2) · Otto Sack (2) · Walter Fisher Luff (2) · Charles Wolf (2) · Ernest William Welsh (2) · Alfred William Turner (2)
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None (3) · Ernest William Welsh (2) · Alfred William Turner (2) · Carl Hanschke (2) · Charles Wolf (2) · Walter Fisher Luff (2) · Otto Sack (2)
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None (21) · airplane (14) · helicopter (10) · Propulsion (8) · hybrid (8) · design (7) · propellers (6) · frame (5) · whole (4) · heavier-than-air (4) · lift (4) · construction (4) · wings (3) · aerodynamics (3) · chassis (3) · stability (3) · safety (3) · ascension (3) · propeller (3)
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