2190426

Information

• Patent Grant
• 2190426

• References
• Source

• Patent Number

  2,190,426

• Date Filed

  Not available

• Date Issued

  Tuesday, February 13, 1940
  84 years ago

• CPC

  • G09F11/325 - the display elements being stored in the form of rolls fixed in between transporting belts or chains

• US Classifications

  • 040 - Card, picture, or sign exhibiting