2226978

Information

• Patent Grant
• 2226978

• References
• Source

• Patent Number

  2,226,978

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1940
  84 years ago

• CPC

  • B64C27/023 - Construction of the blades; Coating of the blades

• US Classifications

  • 244 - Aeronautics and astronautics
  • 416 - Fluid reaction surfaces