3219390

Information

• Patent Grant
• 3219390

• References
• Source

• Patent Number

  3,219,390

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1965
  59 years ago

• CPC

  • E21F13/002 - Crushing devices specifically for conveying in mines
  • E21C27/20 - Mineral freed by means not involving slitting

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 175 - Boring or penetrating the earth
  • 241 - Solid material comminution or disintegration