Drilldown: Patents

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Patents > Year filed: 1860 - 1869 & National tech categories : DE 77 or None

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Inventors:
André Crestadoro (2) · Jose Pesaña y Piñol (2) · Richard Boyman-Boyman (2) · Matthew Piers Watt Boulton (2) · William R. Manley (2)
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Tech fields:
LTA (10) · navigation (7) · propulsion (5) · propeller (5) · balloon (5) · marine (5) · dirigible (4) · feathering (3) · paddle-wheel (3) · rudder (2) · Paddle-wheels (2) · ornithopter (2) · launching (2) · None (2)
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