Drilldown: Patents

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Patents > Year granted: 1920 - 1929 & National tech categories : FR 6.4 or None & IPCs : IPC B64B1/40 or IPC B64C3/00 or IPC B64C31/06 or IPC B64C33/00

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airplane (14) · wings (11) · design (8) · construction (5) · LTA (4) · frame (4) · stays (3) · monoplane (3) · aerodynamics (3) · None (3) · lift (2) · ballast (2) · Wing (2) · triplane (2) · sustentation (2) · Subsystem (2) · longerons (2) · aircraft (2)
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Showing below up to 35 results in range #1 to #35.

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