3134941

Information

• Patent Grant
• 3134941

• References
• Source

• Patent Number

  3,134,941

• Date Filed

  Not available

• Date Issued

  Tuesday, May 26, 1964
  60 years ago

• CPC

  • E21B47/102 - using electrical indications: using light radiations
  • E21B47/08 - Measuring the diameter
  • G01V3/22 - using dc

• US Classifications

  • 324 - Electricity: measuring and testing