3876003

Information

• Patent Grant
• 3876003

• References
• Source

• Patent Number

  3,876,003

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1975
  49 years ago

• CPC

  • E21B49/088 - combined with sampling
  • E21B33/1246 - inflated by down-hole pumping means operated by a pipe string
  • E21B34/125 - with time delay systems

• US Classifications

  • 166 - Wells