3697136

Information

• Patent Grant
• 3697136

• References
• Source

• Patent Number

  3,697,136

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1972
  52 years ago

• CPC

  • E21C27/20 - Mineral freed by means not involving slitting

• US Classifications

  • 299 - Mining or in situ disintegration of hard material