3859800

Information

• Patent Grant
• 3859800

• References
• Source

• Patent Number

  3,859,800

• Date Filed

  Not available

• Date Issued

  Tuesday, January 14, 1975
  50 years ago

• CPC

  • E02D3/115 - by freezing
  • E02D27/35 - Foundations formed in frozen ground

• US Classifications

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