1793933

Information

• Patent Grant
• 1793933

• References
• Source

• Patent Number

  1,793,933

• Date Filed

  Not available

• Date Issued

  Tuesday, February 24, 1931
  93 years ago

• CPC

  • B64D35/06 - the propellers or rotors being counter-rotating
  • B64D2700/62824 - co-rotating

• US Classifications

  • 416 - Fluid reaction surfaces
  • 123 - Internal-combustion engines