3027951

Information

• Patent Grant
• 3027951

• References
• Source

• Patent Number

  3,027,951

• Date Filed

  Not available

• Date Issued

  Tuesday, April 3, 1962
  62 years ago

• CPC

  • E21B7/122 - with submersible vertically movable guide

• US Classifications

  • 175 - Boring or penetrating the earth
  • 324 - Electricity: measuring and testing