3431881

Information

• Patent Grant
• 3431881

• References
• Source

• Patent Number

  3,431,881

• Date Filed

  Not available

• Date Issued

  Tuesday, March 11, 1969
  55 years ago

• CPC

  • B63H19/06 - by discharging gas into ambient water
  • B63B1/38 - using air bubbles or air layers gas filled volumes
  • Y02T70/122 - Air lubrication, air cavity systems

• US Classifications

  • 440 - Marine propulsion
  • 114 - Ships