3845569

Information

• Patent Grant
• 3845569

• References
• Source

• Patent Number

  3,845,569

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1974
  50 years ago

• CPC

  • E21B47/02232 - using a pendulum
  • G01C19/02 - Rotary gyroscopes

• US Classifications

  • 033 - Geometrical instruments