72513

Information

• Patent Grant
• 72513

• References
• Source

• Patent Number

  72,513

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1867
  157 years ago

• CPC

  • E21C49/02 - by excavating

• US Classifications

  • 037 - Excavating
  • 044 - Fuel and related compositions