3533478

Information

• Patent Grant
• 3533478

• References
• Source

• Patent Number

  3,533,478

• Date Filed

  Not available

• Date Issued

  Tuesday, October 13, 1970
  54 years ago

• CPC

  • E21B7/124 - with underwater tool drive prime mover
  • E21B25/18 - the core receiver being specially adapted for operation under water
  • E21B49/025 - of underwater soil
  • Y10S173/01 - Operable submerged in liquid
  • Y10T74/173 - Screw and nut adjusting means

• US Classifications

  • 173 - Tool driving or impacting
  • 074 - Machine element or mechanism
  • 175 - Boring or penetrating the earth