2523577

Information

• Patent Grant
• 2523577

• References
• Source

• Patent Number

  2,523,577

• Date Filed

  Not available

• Date Issued

  Tuesday, September 26, 1950
  74 years ago

• CPC

  • G01C1/14 - Periscopic sextants
  • G01C1/02 - Theodolites

• US Classifications

  • 356 - Optics: measuring and testing
  • 116 - Signals and indicators
  • 359 - Optical: systems and elements