2522399

Information

• Patent Grant
• 2522399

• References
• Source

• Patent Number

  2,522,399

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1950
  74 years ago

• CPC

  • E21B25/12 - of the sliding wedge type

• US Classifications

  • 175 - Boring or penetrating the earth