3799614

Information

• Patent Grant
• 3799614

• References
• Source

• Patent Number

  3,799,614

• Date Filed

  Not available

• Date Issued

  Tuesday, March 26, 1974
  50 years ago

• CPC

  • E02F3/8808 - Stationary installations
  • B65G53/30 - Conveying materials in bulk through pipes or tubes by liquid pressure
  • E21C25/60 - Slitting by jets of water or other liquid
  • E21C41/00 - Methods of underground or surface mining Lay-outs therefor
  • E21C47/00 - Machines for obtaining or the removal of materials in open-pit mines
  • E21F13/042 - Vertical hydraulic conveying of coal

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 037 - Excavating