2866509

Information

• Patent Grant
• 2866509

• References
• Source

• Patent Number

  2,866,509

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1958
  66 years ago

• CPC

  • E21B43/003 - Vibrating earth formations
  • E21B28/00 - Vibration generating arrangements for boreholes or wells
  • E21B43/24 - using heat
  • Y10S116/22 - Heated air

• US Classifications

  • 166 - Wells
  • 092 - Expansible chamber devices
  • 116 - Signals and indicators