3742276

Information

• Patent Grant
• 3742276

• References
• Source

• Patent Number

  3,742,276

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1973
  52 years ago

• CPC

  • H01J31/16 - with mask carrying a number of selectively displayable signs

• US Classifications

  • 313 - Electric lamp and discharge devices