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Patents > Office : CH or GB or NO & Inventor country: US & Filing date: 1800 - 1899

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LTA (10) · propeller (10) · navigation (7) · propulsion (7) · frame (6) · rudder (5) · subsystem (3) · instrument (3) · electricity (3) · kite (3) · car (3) · balloon (3) · airfoil (3) · airplane (3) · stability (3)
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