3573792

Information

• Patent Grant
• 3573792

• References
• Source

• Patent Number

  3,573,792

• Date Filed

  Not available

• Date Issued

  Tuesday, April 6, 1971
  53 years ago

• CPC

  • G09F13/04 - Signs, boards or panels, illuminated from behind the insignia
  • G09F13/0409 - Arrangements for homogeneous illumination of the display surface
  • G09F2013/0427 - in the form of buttons
  • G09F2013/045 - Presence of a door
  • G09F2013/0454 - With slidable panels or parts

• US Classifications

  • 345 - Computer graphics processing and selective visual display systems
  • 040 - Card, picture, or sign exhibiting
  • 340 - Communications: electrical