3680321

Information

• Patent Grant
• 3680321

• References
• Source

• Patent Number

  3,680,321

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1972
  52 years ago

• CPC

  • E02B17/022 - adapted to travel on the bottom
  • E02F9/045 - for moving on the underwater bottom

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 180 - Motor vehicles
  • 440 - Marine propulsion