Drilldown: Patents

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Patents > Office : ES or GB or NL or Other & Publication date: 1900 - 1999 & Related to aircraft : 0 or Yes & National tech categories: None & First filing: No & Number of text pages: 2-3

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propulsion (8) · airplane (7) · Propellers (7) · design (6) · Subsystem (4) · aerodynamics (4) · wings (4) · frame (4) · lift (3) · LTA (3) · stability (3) · Instrument (3) · rubber (2) · construction (2) · landing (2) · Airship (2) · helicopter (2)
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Showing below up to 27 results in range #1 to #27.

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