Etienne de Ostchefsky-Krouglik
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Etienne de Ostchefsky-Krouglik was an aero inventor, with occupation -- and location --.
Patents whose inventor or applicant is Etienne de Ostchefsky-Krouglik or Stephan de Ostchewsky-Krouglik
- Patent FR-1908-390933 (English title: Device realizing the solution of the basic problem of aerostation, Filing date: 1908-01-22)
- Patent FR-1911-426729 (English title: Airfoil particularly suitable for propellers, Filing date: 1911-03-02)
References
| Names | Etienne de Ostchefsky-Krouglik; Stephan de Ostchewsky-Krouglik |
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| Countries | RU |
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