2995992

Information

• Patent Grant
• 2995992

• References
• Source

• Patent Number

  2,995,992

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1961
  63 years ago

• CPC

  • G01C15/14 - Artificial horizons
  • G02B23/10 - reflecting into the field of view additional indications

• US Classifications

  • 396 - Photography
  • 356 - Optics: measuring and testing
  • 359 - Optical: systems and elements