3306665

Information

• Patent Grant
• 3306665

• References
• Source

• Patent Number

  3,306,665

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1967
  57 years ago

• CPC

  • E21C35/22 - Equipment for preventing the formation of, or for removal of, dust
  • E21C27/01 - specially adapted for removing overhanging coal

• US Classifications

  • 299 - Mining or in situ disintegration of hard material