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Patents > Filing date: 1889 & Supplementary to patent : Patent GB-1909-8531 or None

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Hiram Stevens Maxim (2) · Albert Emil Karl Rieckert (2)
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LTA (17) · propulsion (11) · whole (10) · car (8) · balloon (6) · navigation (6) · military (6) · stability (5) · marine (4) · compartments (4) · None (4) · flapping (4) · propeller (4) · subsystem (4) · frame (4) · parachute (3) · motor (3) · rudder (3) · valve (3) · metal (3)
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