1776157

Information

• Patent Grant
• 1776157

• References
• Source

• Patent Number

  1,776,157

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1930
  94 years ago

• CPC

  • H01J13/06 - Cathodes
  • H01J13/22 - Screens
  • H01J2893/0075 - Cathodic cups

• US Classifications

  • 313 - Electric lamp and discharge devices