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Patents > National tech categories : GB 4 propel & steer or USPC 244/49 & Number of claims: None

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James Grieve Lorrain (3) · Horace Leonard Short (2) · John MacHaffie (2) · Patrick Young Alexander (2) · Ernest Wilson (2)
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propulsion (23) · propeller (17) · LTA (15) · navigation (12) · subsystem (9) · electricity (8) · rudder (8) · frame (7) · car (6) · valve (6) · marine (6) · None (6) · balloon (5) · steam (5) · heavier-than-air (5) · parachute (4) · whole (4) · jet (4) · airplane (4) · ascension (4)
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Showing below up to 55 results in range #1 to #55.

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