3337269

Information

• Patent Grant
• 3337269

• References
• Source

• Patent Number

  3,337,269

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1967
  57 years ago

• CPC

  • E21C27/18 - by both slitting and planing
  • E21C27/24 - by milling means acting on the full working face
  • E21C27/34 - Machine propelled along the working face by cable or chain
  • E21C35/12 - along a conveyor for the cut mineral

• US Classifications

  • 299 - Mining or in situ disintegration of hard material