2178837

Information

• Patent Grant
• 2178837

• References
• Source

• Patent Number

  2,178,837

• Date Filed

  Not available

• Date Issued

  Tuesday, November 7, 1939
  85 years ago

• CPC

  • H01J19/52 - without fixed connection between spacing member and envelope
  • H01J2893/0009 - Electrode system pressing against vessel wall

• US Classifications

  • 313 - Electric lamp and discharge devices