2147445

Information

• Patent Grant
• 2147445

• References
• Source

• Patent Number

  2,147,445

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1939
  86 years ago

• CPC

  • H01J13/28 - Selection of substances for gas filling Means for obtaining the desired pressure within the tube
  • H01J13/34 - Igniting arrangements
  • H01J2893/0087 - Igniting means Cathode spot maintaining or extinguishing means

• US Classifications

  • 313 - Electric lamp and discharge devices