Drilldown: Patents

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Patents > Year filed: 1900 - 1909 & Year granted: 1909 & Office : DE or MX or None

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None (7) · Paul Frederik Degn (3) · Ottavio Ricaldoni (2) · G. Arturo Crocco (2)
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LTA (18) · None (7) · balloon (7) · suspension (6) · propeller (5) · propulsion (4) · car (4) · flapping (3) · hybrid (3) · airplane (3) · wings (3) · storage (2) · metal (2) · chemical (2) · compartments (2) · nacelle (2) · glider (2) · electricity (2)
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