Drilldown: Patents

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Patents > Year granted: 1910 - 1919 & Office : DE or FR or UN & Supplementary to patent : DE79446 or Patent NO-1915-12-15 Carl Alfred Johansson or None & IPCs : IPC B64C23/00 or IPC B64C31/06

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airplane (13) · None (8) · helicopter (7) · hybrid (6) · lift (5) · propellers (4) · wings (4) · ascension (4) · construction (3) · kite (3) · stability (3) · Control (3) · Propulsion (3) · chassis (2) · frame (2) · LTA (2) · airfoil (2) · navigation (2) · propeller (2) · Aerodynamics (2)
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Showing below up to 38 results in range #1 to #38.

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