2229564

Information

• Patent Grant
• 2229564

• References
• Source

• Patent Number

  2,229,564

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1941
  83 years ago

• CPC

  • B64C11/005 - Spiral-shaped propellers

• US Classifications

  • 244 - Aeronautics and astronautics