3807871

Information

• Patent Grant
• 3807871

• References
• Source

• Patent Number

  3,807,871

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1974
  50 years ago

• CPC

  • G01J3/51 - using colour filters
  • G01J3/524 - Calibration of colorimeters
  • G01J2003/468 - of objects containing fluorescent agent

• US Classifications

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