Drilldown: Patents

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Patents > Supplementary to patent: None & National tech categories : DE 62b.13 or DE 77h.6

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Inventors:
None (18) · Jakob Haw (6) · Hellmuth Hirth (4) · Christian Lorenzen (3)
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Tech fields:
propeller (46) · propulsion (12) · Propellers (8) · subsystem (5) · metal (4) · airplane (4) · marine (3) · stability (3) · None (3) · aerodynamics (2) · Aerial propeller (2) · wing (2) · design (2) · parachute (2) · helicopter (2) · motor (2) · propeller blades (2) · safety (2)
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Citations from after 1930:
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Showing below up to 68 results in range #1 to #68.

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