1342778

Information

• Patent Grant
• 1342778

• References
• Source

• Patent Number

  1,342,778

• Date Filed

  Not available

• Date Issued

  Tuesday, June 8, 1920
  104 years ago

• CPC

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

• US Classifications

  • 250 - Radiant energy
  • 362 - Illumination