2290657

Information

• Patent Grant
• 2290657

• References
• Source

• Patent Number

  2,290,657

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1942
  83 years ago

• CPC

  • H01J13/38 - having resistive igniter only
  • B23K11/248 - Electric supplies using discharge tubes

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems