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Patents > Filing date: March 1916 & Number of diagram pages: 1-4

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airplane (6) · frame (5) · construction (5) · HTA (4) · propellers (3) · helicopter (3) · military (3) · design (3) · LTA (3) · compartments (2) · biplane (2) · wings (2) · wing (2) · chassis (2) · Motors (2) · control (2)
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