2125296

Information

• Patent Grant
• 2125296

• References
• Source

• Patent Number

  2,125,296

• Date Filed

  Not available

• Date Issued

  Tuesday, August 2, 1938
  86 years ago

• CPC

  • E21C25/50 - with equipment for cleaning the slit

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 175 - Boring or penetrating the earth