Drilldown: Patents

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Patents > Year granted: 1920 - 1929 & Inventor country : FR or GB or HU or NL & Applicant type : COMPANY or COMPANY + INDIV or INDIV or UNIV-PRO-GOV & Assigned to: None & Number of claims: 3-4

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airplane (10) · Wings (8) · Design (5) · frame (5) · propellers (4) · fuselage (4) · control (4) · helicopter (3) · propulsion (3) · Construction (3) · stability (2) · motors (2) · lift (2) · None (2) · Steering (2) · subsystem (2) · ascension (2) · airfoil (2) · metal (2)
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Showing below up to 27 results in range #1 to #27.

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