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Patents > Year filed: 1916 & Office: DE

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engine (8) · frame (6) · LTA (6) · ICE (6) · instrument (6) · None (5) · propeller (5) · propulsion (5) · fuel (4) · subsystem (4) · design (3) · navigation (3) · piloting (3) · Rigid (3) · airplane (3) · construction (3) · propellers (3)
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