Drilldown: Patents

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Patents > Year filed: 1840 - 1849 & Applicant firm: None & First filing: No

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LTA (12) · propulsion (6) · navigation (5) · marine (5) · submarine (4) · propellers (4) · passenger (3) · aero-as-power (2) · ascension (2) · balloon (2) · track (2) · cargo (2) · propeller (2) · human-powered (2)
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