3849687

Information

• Patent Grant
• 3849687

• References
• Source

• Patent Number

  3,849,687

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1974
  50 years ago

• CPC

  • H01K1/56 - characterised by the material of the getter

• US Classifications

  • 313 - Electric lamp and discharge devices