3434447

Information

• Patent Grant
• 3434447

• References
• Source

• Patent Number

  3,434,447

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1969
  55 years ago

• CPC

  • B63H1/28 - Other means for improving propeller efficiency
  • B63H2001/286 - Injection of gas into fluid flow to propellers, or around propeller blades
  • Y02T70/121 - Reducing surface friction

• US Classifications

  • 440 - Marine propulsion
  • 114 - Ships