3328068

Information

• Patent Grant
• 3328068

• References
• Source

• Patent Number

  3,328,068

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1967
  57 years ago

• CPC

  • E21B25/12 - of the sliding wedge type

• US Classifications

  • 294 - Handling: hand and hoist-line implements
  • 175 - Boring or penetrating the earth