2152996

Information

• Patent Grant
• 2152996

• References
• Source

• Patent Number

  2,152,996

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1939
  85 years ago

• CPC

  • H01J13/14 - Cooling, heating, circulating, filtering, or controlling level of the liquid
  • H01J61/06 - Main electrodes
  • H01J2893/0084 - Protection against mercury deposition

• US Classifications

  • 313 - Electric lamp and discharge devices