3445721

Information

• Patent Grant
• 3445721

• References
• Source

• Patent Number

  3,445,721

• Date Filed

  Not available

• Date Issued

  Tuesday, May 20, 1969
  55 years ago

• CPC

  • H01J61/542 - and an auxiliary electrode inside the vessel

• US Classifications

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