2871757

Information

• Patent Grant
• 2871757

• References
• Source

• Patent Number

  2,871,757

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1959
  65 years ago

• CPC

  • G01J3/16 - with autocollimation

• US Classifications

  • 356 - Optics: measuring and testing
  • 250 - Radiant energy