1038565

Information

• Patent Grant
• 1038565

• References
• Source

• Patent Number

  1,038,565

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1912
  112 years ago

• CPC

  • E21C49/02 - by excavating

• US Classifications

  • 037 - Excavating
  • 162 - Paper making and fiber liberation
  • 299 - Mining or in situ disintegration of hard material