2670652

Information

• Patent Grant
• 2670652

• References
• Source

• Patent Number

  2,670,652

• Date Filed

  Not available

• Date Issued

  Tuesday, March 2, 1954
  70 years ago

• CPC

  • G01J3/16 - with autocollimation

• US Classifications

  • 356 - Optics: measuring and testing
  • 362 - Illumination