3778113

Information

• Patent Grant
• 3778113

• References
• Source

• Patent Number

  3,778,113

• Date Filed

  Not available

• Date Issued

  Tuesday, December 11, 1973
  51 years ago

• CPC

  • E21C27/12 - breaking-down effected by acting on the vertical face of the mineral

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 173 - Tool driving or impacting