3495121

Information

• Patent Grant
• 3495121

• References
• Source

• Patent Number

  3,495,121

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1970
  55 years ago

• CPC

  • H01J1/24 - Insulating layer or body located between heater and emissive material
  • H01J1/28 - Dispenser-type cathodes

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 219 - Electric heating