Drilldown: Patents

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Patents > Office : ?? or BE or DEG or DK or HU or JP & Grant date: 1920 - 1929 & Granted: Yes & Patent agent : Brandon frères or None & Number of claims: 2-4

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airplane (15) · Airship (6) · Frame (6) · wings (5) · subsystem (5) · aerodynamics (5) · military (4) · lift (3) · construction (3) · design (3) · Instrument (3) · biplane (3)
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Showing below up to 30 results in range #1 to #30.

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