3620571

Information

• Patent Grant
• 3620571

• References
• Source

• Patent Number

  3,620,571

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1971
  53 years ago

• CPC

  • E21B43/285 - Melting minerals
  • E21B36/00 - Heating, cooling, insulating arrangements for boreholes or wells
  • E21B43/24 - using heat

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 126 - Stoves and furnaces
  • 166 - Wells