3284138

Information

• Patent Grant
• 3284138

• References
• Source

• Patent Number

  3,284,138

• Date Filed

  Not available

• Date Issued

  Tuesday, November 8, 1966
  58 years ago

• CPC

  • E21F13/061 - Chutes and braking conveyors for average and steep slopes, adapted for mining purposes
  • E21C35/16 - by making use of the timbering, filling, or other supports

• US Classifications

  • 299 - Mining or in situ disintegration of hard material