2838022

Information

• Patent Grant
• 2838022

• References
• Source

• Patent Number

  2,838,022

• Date Filed

  Not available

• Date Issued

  Tuesday, June 10, 1958
  66 years ago

• CPC

  • B63B1/047 - with spherical hull or hull in the shape of a vertical ring

• US Classifications

  • 441 - Buoys, rafts, and aquatic devices
  • 280 - Land vehicles
  • 440 - Marine propulsion
  • 472 - Amusement devices
  • 482 - Exercise devices