1871601

Information

• Patent Grant
• 1871601

• References
• Source

• Patent Number

  1,871,601

• Date Filed

  Not available

• Date Issued

  Tuesday, August 16, 1932
  92 years ago

• CPC

  • E21B11/02 - Boring rams

• US Classifications

  • 175 - Boring or penetrating the earth
  • 111 - Planting
  • 173 - Tool driving or impacting