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Patents > CPCs : CPC B64C11/48 or CPC B64C31/02 & Number of diagram pages: 2-8

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propeller (9) · None (5) · frame (5) · stability (4) · glider (4) · airfoil (3) · propellers (3) · navigation (3) · design (3) · rudder (2) · propulsion (2) · ornithopter (2) · marine propulsion (2) · aerial propeller (2) · marine (2) · marine propeller (2) · Construction (2) · wings (2) · Churn (2) · airplane (2)
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