2067770

Information

• Patent Grant
• 2067770

• References
• Source

• Patent Number

  2,067,770

• Date Filed

  Not available

• Date Issued

  Tuesday, January 12, 1937
  88 years ago

• CPC

  • B64C11/005 - Spiral-shaped propellers

• US Classifications

  • 244 - Aeronautics and astronautics