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Patents > Inventor country: US & Number of diagram pages: 8-15 & Number of figures: 21-50

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airplane (9) · frame (7) · marine (4) · propulsion (4) · car (3) · navigation (3) · stability (3) · propellers (3)
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USPC 244/119 (3) · USPC 244/131 (2) · USPC 244/99.11 (2) · USPC 244/96 (2) · USPC 244/234 (2)
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