1379706

Information

• Patent Grant
• 1379706

• References
• Source

• Patent Number

  1,379,706

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1921
  103 years ago

• CPC

  • H01J21/16 - with external electrostatic control means and with or without internal control electrodes

• US Classifications

  • 329 - Demodulators
  • 313 - Electric lamp and discharge devices