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Patents > National tech categories : CA 244/53 or GB 4 propel & steer & IPCs: None

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Inventors:
James Grieve Lorrain (3) · Ernest Wilson (3) · Charles John Evans (2) · Gustav Koch (2) · Hiram Stevens Maxim (2) · Octave Chanute (2) · John MacHaffie (2) · John Marshall (2) · Patrick Young Alexander (2)
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Tech fields:
propulsion (35) · navigation (22) · propeller (21) · LTA (19) · rudder (14) · frame (11) · electricity (10) · subsystem (10) · heavier-than-air (9) · car (9) · balloon (7) · flapping (7) · marine (7) · jet (7) · ascension (6) · steam (6) · airplane (6) · valve (6) · whole (5) · wings (5)
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