Drilldown: Patents

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Patents > Year granted: 1885 & Family year: 1880 - 1889

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None (28) · LTA (12) · navigation (9) · propeller (7) · frame (6) · propulsion (6) · rudder (5) · balloon (5) · airfoil (3) · safety (2) · military (2) · Windmill (2) · car (2)
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