1858361

Information

• Patent Grant
• 1858361

• References
• Source

• Patent Number

  1,858,361

• Date Filed

  Not available

• Date Issued

  Tuesday, May 17, 1932
  92 years ago

• CPC

  • G02B17/08 - Catadioptric systems
  • G02B17/0868 - for light condensing

• US Classifications

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