2389143

Information

• Patent Grant
• 2389143

• References
• Source

• Patent Number

  2,389,143

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1945
  79 years ago

• CPC

  • G01C1/10 - including an artificial horizon

• US Classifications

  • 356 - Optics: measuring and testing
  • 033 - Geometrical instruments