3778876

Information

• Patent Grant
• 3778876

• References
• Source

• Patent Number

  3,778,876

• Date Filed

  Not available

• Date Issued

  Tuesday, December 18, 1973
  50 years ago

• CPC

  • E02D19/10 - by lowering level of ground water
  • E02D3/103 - by installing wick drains or sand bags
  • E03B3/18 - Well filters
  • E21B7/18 - Drilling by liquid or gas jets, with or without entrained pellets
  • E21B7/20 - Driving or forcing casings or pipes into boreholes
  • E21B43/084 - Screens comprising woven materials
  • Y10T29/49604 - Filter
  • Y10T29/49789 - Obtaining plural product pieces from unitary workpiece
  • Y10T29/49826 - Assembling or joining

• US Classifications

  • 029 - Metal working