2673407

Information

• Patent Grant
• 2673407

• References
• Source

• Patent Number

  2,673,407

• Date Filed

  Not available

• Date Issued

  Tuesday, March 30, 1954
  70 years ago

• CPC

  • E21B11/06 - with driven cutting chains or similarly driven tools

• US Classifications

  • 037 - Excavating