2808251

Information

• Patent Grant
• 2808251

• References
• Source

• Patent Number

  2,808,251

• Date Filed

  Not available

• Date Issued

  Tuesday, October 1, 1957
  67 years ago

• CPC

  • E21C31/08 - for adjusting parts of the machines

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 254 - Implements or apparatus for applying pushing or pulling force