3784891

Information

• Patent Grant
• 3784891

• References
• Source

• Patent Number

  3,784,891

• Date Filed

  Not available

• Date Issued

  Tuesday, January 8, 1974
  51 years ago

• CPC

  • G01C19/36 - with north-seeking action by magnetic means

• US Classifications

  • 318 - Electricity: motive power systems
  • 244 - Aeronautics and astronautics