3593811

Information

• Patent Grant
• 3593811

• References
• Source

• Patent Number

  3,593,811

• Date Filed

  Not available

• Date Issued

  Tuesday, July 20, 1971
  53 years ago

• CPC

  • E21B4/18 - Anchoring or feeding in the borehole
  • E21B4/16 - Plural down-hole drives
  • E21B7/203 - using down-hole drives

• US Classifications

  • 175 - Boring or penetrating the earth