2199823

Information

• Patent Grant
• 2199823

• References
• Source

• Patent Number

  2,199,823

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1940
  84 years ago

• CPC

  • B64C11/16 - Blades
  • B63H1/20 - Hubs Blade connections
  • B63H1/26 - Blades
  • B64C11/18 - Aerodynamic features
  • B64C11/20 - Constructional features
  • B63H2001/145 - comprising blades of two or more different types
  • B64C2230/28 - at propeller or rotor blades
  • Y02T50/166 - by influencing the boundary layer
  • Y02T50/66 - Propellers

• US Classifications

  • 416 - Fluid reaction surfaces