3901320

Information

• Patent Grant
• 3901320

• References
• Source

• Patent Number

  3,901,320

• Date Filed

  Not available

• Date Issued

  Tuesday, August 26, 1975
  49 years ago

• CPC

  • E21B43/088 - Wire screens
  • B01D29/17 - open-ended the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
  • E21B37/02 - Scrapers specially adapted therefor
  • E21B37/08 - cleaning in situ of down-hole filters, screens

• US Classifications

  • 166 - Wells
  • 210 - Liquid purification or separation