3892998

Information

• Patent Grant
• 3892998

• References
• Source

• Patent Number

  3,892,998

• Date Filed

  Not available

• Date Issued

  Tuesday, July 1, 1975
  49 years ago

• CPC

  • H01J17/497 - for several colours
  • G09F13/26 - Signs formed by electric discharge tubes

• US Classifications

  • 313 - Electric lamp and discharge devices