3409770

Information

• Patent Grant
• 3409770

• References
• Source

• Patent Number

  3,409,770

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1968
  56 years ago

• CPC

  • F21K2/00 - Light sources using luminescence
  • C09K11/04 - containing natural or artificial radioactive elements or unspecified radioactive elements
  • H01J65/08 - Lamps in which a screen or coating is excited to luminesce by radioactive material located inside the vessel

• US Classifications

  • 250 - Radiant energy
  • 040 - Card, picture, or sign exhibiting