2810564

Information

• Patent Grant
• 2810564

• References
• Source

• Patent Number

  2,810,564

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1957
  67 years ago

• CPC

  • E21F13/068 - Special adaptations for use at the junction of the working face with the gallery

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 198 - Conveyors: power-driven