3088227

Information

• Patent Grant
• 3088227

• References
• Source

• Patent Number

  3,088,227

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1963
  61 years ago

• CPC

  • G01J3/528 - using colour harmony theory
  • G01J3/522 - circular colour charts

• US Classifications

  • 434 - Education and demonstration