2887618

Information

• Patent Grant
• 2887618

• References
• Source

• Patent Number

  2,887,618

• Date Filed

  Not available

• Date Issued

  Tuesday, May 19, 1959
  65 years ago

• CPC

  • F04F9/00 - Diffusion pumps
  • H01J13/28 - Selection of substances for gas filling Means for obtaining the desired pressure within the tube
  • 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

  • 315 - Electric lamp and discharge devices: systems
  • 251 - Valves and valve actuation
  • 417 - Pumps