3815268

Information

• Patent Grant
• 3815268

• References
• Source

• Patent Number

  3,815,268

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • E01B27/025 - by means of non-driven tools

• US Classifications

  • 037 - Excavating
  • 172 - Earth working