Drilldown: Patents

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Patents > Year filed: 1917 & Number of figures: 12-16

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construction (6) · Airplane (5) · None (4) · wings (4) · design (4) · propellers (3) · frame (3) · fuselage (2) · propulsion (2) · electricity (2) · metal (2) · LTA (2) · stability (2) · structure (2) · subsystem (2) · airship (2)
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