1801861

Information

• Patent Grant
• 1801861

• References
• Source

• Patent Number

  1,801,861

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1931
  93 years ago

• CPC

  • E21C29/24 - Trucks carrying the machine while working

• US Classifications

  • 299 - Mining or in situ disintegration of hard material