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Patents > National tech categories : GB 4 propel & steer or USPC 74/6 & Number of claims: None

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James Grieve Lorrain (3) · John MacHaffie (2) · Patrick Young Alexander (2) · Ernest Wilson (2)
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propulsion (23) · propeller (16) · LTA (15) · navigation (11) · subsystem (9) · electricity (8) · rudder (8) · marine (6) · car (6) · frame (6) · valve (6) · steam (5) · balloon (5) · heavier-than-air (5) · ascension (4) · whole (4) · parachute (4) · jet (4)
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Showing below up to 51 results in range #1 to #51.

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