3494668

Information

• Patent Grant
• 3494668

• References
• Source

• Patent Number

  3,494,668

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1970
  54 years ago

• CPC

  • E21C27/128 - with breaking-down members functioning on the slitting level

• US Classifications

  • 299 - Mining or in situ disintegration of hard material