3267680

Information

• Patent Grant
• 3267680

• References
• Source

• Patent Number

  3,267,680

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1966
  58 years ago

• CPC

  • E02D19/14 - by freezing the soil
  • E02D17/04 - Bordering surfacing or stiffening the sides of foundation pits
  • E21D1/12 - by freezing
  • F17C3/005 - Underground or underwater containers or vessels
  • F17C2201/0119 - with flat end-piece
  • F17C2201/032 - with substantially vertical main axis
  • F17C2201/052 - large (>1000 m3)
  • F17C2221/033 - Methane
  • F17C2223/0161 - cryogenic
  • F17C2223/033 - Small pressure
  • F17C2270/0149 - by digging cavities

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 165 - Heat exchange