1885637

Information

• Patent Grant
• 1885637

• References
• Source

• Patent Number

  1,885,637

• Date Filed

  Not available

• Date Issued

  Tuesday, November 1, 1932
  92 years ago

• CPC

  • H01J13/28 - Selection of substances for gas filling Means for obtaining the desired pressure within the tube
  • H01J61/58 - Lamps with both liquid anode and liquid cathode
  • H01J2893/0086 - Gas fill Maintaining or maintaining desired pressure Producing, introducing or replenishing gas or vapour during operation of the tube Getters Gas cleaning Electrode cleaning

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 220 - Receptacles
  • 362 - Illumination