2671283

Information

• Patent Grant
• 2671283

• References
• Source

• Patent Number

  2,671,283

• Date Filed

  Not available

• Date Issued

  Tuesday, March 9, 1954
  70 years ago

• CPC

  • E21D1/03 - mechanically
  • E21B27/00 - Containers for collecting or depositing substances in boreholes or wells
  • Y10S414/129 - Shaft mucking machines

• US Classifications

  • 037 - Excavating
  • 299 - Mining or in situ disintegration of hard material
  • 414 - Material or article handling