2452449

Information

• Patent Grant
• 2452449

• References
• Source

• Patent Number

  2,452,449

• Date Filed

  Not available

• Date Issued

  Tuesday, October 26, 1948
  76 years ago

• CPC

  • G09B19/0007 - Signalling
  • G08B5/006 - Portable traffic signalling devices

• US Classifications

  • 434 - Education and demonstration
  • 040 - Card, picture, or sign exhibiting