Drilldown: Patents

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Patents > Year filed: 1860 - 1869 & Supplementary to patent: None & First filing: None

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Inventors:
Henry William Grylls (2) · de Louvrie (2) · J. Holt (2) · H. Neville (2) · J. W. Brooks (2) · Matthew Piers Watt Boulton (2)
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Tech fields:
navigation (12) · balloon (11) · propulsion (9) · LTA (7) · None (3) · aerial navigation (3) · marine (3) · hybrid (2) · Aerostat (2) · springs (2) · aerial vessel (2)
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