3801157

Information

• Patent Grant
• 3801157

• References
• Source

• Patent Number

  3,801,157

• Date Filed

  Not available

• Date Issued

  Tuesday, April 2, 1974
  50 years ago

• CPC

  • E21C31/10 - for slewing parts of the machines
  • E21C27/20 - Mineral freed by means not involving slitting
  • E21C35/00 - Miscellaneous items relating to machines for slitting or completely freeing the mineral from the seam

• US Classifications

  • 299 - Mining or in situ disintegration of hard material