3515492

Information

• Patent Grant
• 3515492

• References
• Source

• Patent Number

  3,515,492

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1970
  54 years ago

• CPC

  • G01J3/461 - with colour spinners
  • H04N11/00 - Colour television systems

• US Classifications

  • 356 - Optics: measuring and testing
  • 040 - Card, picture, or sign exhibiting
  • 348 - Television
  • 351 - Optics: eye examining, vision testing and correcting
  • 352 - Optics: motion pictures