2173371

Information

• Patent Grant
• 2173371

• References
• Source

• Patent Number

  2,173,371

• Date Filed

  Not available

• Date Issued

  Tuesday, September 19, 1939
  85 years ago

• CPC

  • G02B6/0001 - specially adapted for lighting devices or systems
  • G02B6/0026 - Wavelength selective element, sheet or layer
  • G09F2013/189 - Three dimensional effects
  • G09F2013/1895 - Imitating a neon tube

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 362 - Illumination