1522169

Information

• Patent Grant
• 1522169

• References
• Source

• Patent Number

  1,522,169

• Date Filed

  Not available

• Date Issued

  Tuesday, January 6, 1925
  99 years ago

• CPC

  • H01H9/185 - Fluorescent or phosphorescent symbols or distinguishing marks

• US Classifications

  • 250 - Radiant energy
  • 040 - Card, picture, or sign exhibiting
  • 220 - Receptacles
  • 362 - Illumination