2860275

Information

• Patent Grant
• 2860275

• References
• Source

• Patent Number

  2,860,275

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 1958
  66 years ago

• CPC

  • H01J1/24 - Insulating layer or body located between heater and emissive material

• US Classifications

  • 313 - Electric lamp and discharge devices