3787991

Information

• Patent Grant
• 3787991

• References
• Source

• Patent Number

  3,787,991

• Date Filed

  Not available

• Date Issued

  Tuesday, January 29, 1974
  51 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
  • 359 - Optical: systems and elements