2321133

Information

• Patent Grant
• 2321133

• References
• Source

• Patent Number

  2,321,133

• Date Filed

  Not available

• Date Issued

  Tuesday, June 8, 1943
  81 years ago

• CPC

  • B63B1/047 - with spherical hull or hull in the shape of a vertical ring
  • B63B1/36 - using mechanical means
  • B63H1/38 - characterised solely by flotation properties
  • Y02T70/121 - Reducing surface friction

• US Classifications

  • 440 - Marine propulsion
  • 114 - Ships