3848930

Information

• Patent Grant
• 3848930

• References
• Source

• Patent Number

  3,848,930

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1974
  50 years ago

• CPC

  • E21C27/24 - by milling means acting on the full working face
  • E21C31/02 - for cutting or breaking-down devices
  • E21C31/10 - for slewing parts of the machines

• US Classifications

  • 299 - Mining or in situ disintegration of hard material