3047795

Information

• Patent Grant
• 3047795

• References
• Source

• Patent Number

  3,047,795

• Date Filed

  Not available

• Date Issued

  Tuesday, July 31, 1962
  62 years ago

• CPC

  • G01V3/22 - using dc

• US Classifications

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