3558228

Information

• Patent Grant
• 3558228

• References
• Source

• Patent Number

  3,558,228

• Date Filed

  Not available

• Date Issued

  Tuesday, January 26, 1971
  53 years ago

• CPC

  • G01C3/12 - with monocular observation at a single point
  • G01C21/20 - Instruments for performing navigational calculations

• US Classifications

  • 356 - Optics: measuring and testing