2201817

Information

• Patent Grant
• 2201817

• References
• Source

• Patent Number

  2,201,817

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1940
  84 years ago

• CPC

  • H01J17/58 - with more than one cathode or anode

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 313 - Electric lamp and discharge devices
  • 417 - Pumps