3438352

Information

• Patent Grant
• 3438352

• References
• Source

• Patent Number

  3,438,352

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1969
  55 years ago

• CPC

  • E21B43/003 - Vibrating earth formations
  • E21B28/00 - Vibration generating arrangements for boreholes or wells
  • E21B36/001 - Cooling arrangements
  • F04B37/10 - for special use
  • Y10S116/22 - Heated air

• US Classifications

  • 116 - Signals and indicators
  • 165 - Heat exchange