3653771

Information

• Patent Grant
• 3653771

• References
• Source

• Patent Number

  3,653,771

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1972
  52 years ago

• CPC

  • G01J3/528 - using colour harmony theory
  • G01J3/10 - Arrangements of light sources specially adapted for spectrometry or colorimetry
  • G01J3/463 - Colour matching

• US Classifications

  • 356 - Optics: measuring and testing