3911592

Information

• Patent Grant
• 3911592

• References
• Source

• Patent Number

  3,911,592

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1975
  49 years ago

• CPC

  • E21B47/02 - Determining slope or direction
  • E21B7/128 - from floating support with independent underwater anchored guide base
  • E21B17/01 - Risers
  • G01C9/06 - Electric or photoelectric indication or reading means
  • G01C9/22 - with interconnected containers in fixed relation to each other

• US Classifications

  • 033 - Geometrical instruments