3824721

Information

• Patent Grant
• 3824721

• References
• Source

• Patent Number

  3,824,721

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1974
  50 years ago

• CPC

  • G09F11/12 - the display elements being carried by endless belts, chains, or the like

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • D20 - Sales and advertising equipment