3185226

Information

• Patent Grant
• 3185226

• References
• Source

• Patent Number

  3,185,226

• Date Filed

  Not available

• Date Issued

  Tuesday, May 25, 1965
  59 years ago

• CPC

  • E21D1/03 - mechanically

• US Classifications

  • 175 - Boring or penetrating the earth
  • 037 - Excavating
  • 405 - Hydraulic and earth engineering