3744847

Information

• Patent Grant
• 3744847

• References
• Source

• Patent Number

  3,744,847

• Date Filed

  Not available

• Date Issued

  Tuesday, July 10, 1973
  51 years ago

• CPC

  • E21C41/20 - for rock salt or potash salt

• US Classifications

  • 299 - Mining or in situ disintegration of hard material