2882631

Information

• Patent Grant
• 2882631

• References
• Source

• Patent Number

  2,882,631

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1959
  65 years ago

• CPC

  • G09F19/12 - using special optical effects
  • G09F19/205 - Special effects using different wavelengths

• US Classifications

  • 359 - Optical: systems and elements
  • 040 - Card, picture, or sign exhibiting
  • 356 - Optics: measuring and testing