2034148

Information

• Patent Grant
• 2034148

• References
• Source

• Patent Number

  2,034,148

• Date Filed

  Not available

• Date Issued

  Tuesday, March 17, 1936
  88 years ago

• CPC

  • H01J17/50 - Thermionic-cathode tubes

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems