2287230

Information

• Patent Grant
• 2287230

• References
• Source

• Patent Number

  2,287,230

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1942
  82 years ago

• CPC

  • E21C27/126 - with slitting and breaking-down members situated in parallel on an intermediary level

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 198 - Conveyors: power-driven