Drilldown: Patents

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Patents > Office : CA or DE & Grant date: 1890 - 1899 & Number of text pages: 3-70

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LTA (10) · propulsion (7) · frame (6) · navigation (6) · None (5) · balloon (5) · design (4) · airship (3) · propeller (3) · car (3) · sail (2) · rudder (2) · hybrid (2) · dirigible (2)
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