3027668

Information

• Patent Grant
• 3027668

• References
• Source

• Patent Number

  3,027,668

• Date Filed

  Not available

• Date Issued

  Tuesday, April 3, 1962
  62 years ago

• CPC

  • G02B6/005 - provided by one optical element, or plurality thereof, placed on the light output side of the light guide
  • G09F13/22 - electroluminescent
  • Y10S116/35 - Electroluminescent dials

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 116 - Signals and indicators
  • 313 - Electric lamp and discharge devices
  • 362 - Illumination