2498007

Information

• Patent Grant
• 2498007

• References
• Source

• Patent Number

  2,498,007

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1950
  75 years ago

• CPC

  • H03K4/10 - using as active elements vacuum tubes only

• US Classifications

  • 315 - Electric lamp and discharge devices: systems