2305778

Information

• Patent Grant
• 2305778

• References
• Source

• Patent Number

  2,305,778

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1942
  82 years ago

• CPC

  • G01J3/16 - with autocollimation

• US Classifications

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