3905227

Information

• Patent Grant
• 3905227

• References
• Source

• Patent Number

  3,905,227

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1975
  49 years ago

• CPC

  • E21B33/127 - with inflatable sleeve
  • E21B29/10 - Reconditioning of well casings
  • E21B47/0915 - using impression packers

• US Classifications

  • 073 - Measuring and testing