161215

Information

• Patent Grant
• 161215

• References
• Source

• Patent Number

  161,215

• Date Filed

  Not available

• Date Issued

  Tuesday, March 23, 1875
  149 years ago

• CPC

  • E21C49/02 - by excavating

• US Classifications

  • 037 - Excavating
  • 044 - Fuel and related compositions