2533381

Information

• Patent Grant
• 2533381

• References
• Source

• Patent Number

  2,533,381

• Date Filed

  Not available

• Date Issued

  Tuesday, December 12, 1950
  74 years ago

• CPC

  • H01J29/14 - acting by discoloration
  • Y10S348/902 - Photochromic

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 313 - Electric lamp and discharge devices
  • 348 - Television
  • 427 - Coating processes