Drilldown: Patents

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Patents > Office : CA or DE or NL & Inventor country : RU or US & Number of text pages: 3-70 & Number of diagram pages: 3-5

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airplane (6) · propeller (5) · LTA (5) · frame (5) · navigation (5) · design (4) · HTA (4) · propulsion (4) · rudder (4) · None (2) · stability (2) · safety (2) · takeoff (2) · construction (2) · helicopter (2) · car (2) · balloon (2) · propellers (2) · whole (2)
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Showing below up to 31 results in range #1 to #31.

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