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Patents > Year granted: 1910 - 1919 & Office : DE or HU & Family year: 1915

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airplane (24) · frame (15) · construction (12) · design (8) · military (7) · LTA (7) · airship (6) · subsystem (6) · None (5) · stability (5) · gas (4) · fuselage (4) · propellers (4)
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