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Patents > Office : CH or ES or MX & Inventor country : NO or US

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Tech fields:
airplane (8) · None (8) · stability (7) · propellers (7) · airship (6) · LTA (6) · design (5) · wings (5) · wheels (4) · frame (4) · military (4) · propulsion (4) · safety (3) · parachute (3) · human-powered (3) · navigation (3)
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Showing below up to 41 results in range #1 to #41.

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