3808822

Information

• Patent Grant
• 3808822

• References
• Source

• Patent Number

  3,808,822

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1974
  50 years ago

• CPC

  • G01V1/137 - which fluid escapes from the generator in a pulsating manner
  • E02D3/103 - by installing wick drains or sand bags
  • E02D3/106 - by forming sand drains containing only loose aggregates
  • E02D5/385 - with removal of the outer mould-pipes
  • E02D15/04 - Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 181 - Acoustics
  • 222 - Dispensing
  • 239 - Fluid sprinkling, spraying, and diffusing
  • 261 - Gas and liquid contact apparatus