3285662

Information

• Patent Grant
• 3285662

• References
• Source

• Patent Number

  3,285,662

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1966
  58 years ago

• CPC

  • E21F13/068 - Special adaptations for use at the junction of the working face with the gallery
  • E21C29/14 - by haulage cable or chain pulling the machine along the working face
  • E21C35/12 - along a conveyor for the cut mineral

• US Classifications

  • 299 - Mining or in situ disintegration of hard material