Drilldown: Patents

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Patents > Office : BE or RU or SAX or Other & Filing date: 1800 - 1899 & Application number: None & Supplementary to patent : Patent FR-1891-216860 or None & Patent agent: None & National tech categories: GB 4 propel & steer

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propulsion (16) · propeller (9) · subsystem (8) · navigation (7) · marine (5) · heavier-than-air (5) · LTA (4) · rudder (4) · steam (4) · electricity (4) · jet (3) · flapping (3) · parachute (3) · car (3) · airplane (3) · electronics (3) · valve (3)
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