2114885

Information

• Patent Grant
• 2114885

• References
• Source

• Patent Number

  2,114,885

• Date Filed

  Not available

• Date Issued

  Tuesday, April 19, 1938
  86 years ago

• CPC

  • H01J17/52 - with one cathode and one anode

• US Classifications

  • 313 - Electric lamp and discharge devices