3291533

Information

• Patent Grant
• 3291533

• References
• Source

• Patent Number

  3,291,533

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1966
  58 years ago

• CPC

  • E21C25/145 - Cowls

• US Classifications

  • 299 - Mining or in situ disintegration of hard material