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Patents > Filing date: 1894 & Grant date: 1890 - 1899 & First filing: Yes

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LTA (9) · propeller (4) · propulsion (4) · fabric (3) · navigation (3) · airship (3) · balloon (3) · steering (3) · None (2) · gas (2) · frame (2) · structure (2) · marine (2) · design (2)
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