2928992

Information

• Patent Grant
• 2928992

• References
• Source

• Patent Number

  2,928,992

• Date Filed

  Not available

• Date Issued

  Tuesday, March 15, 1960
  64 years ago

• CPC

  • H03B9/02 - using a retarding-field tube
  • H01J25/62 - Strophotrons

• US Classifications

  • 313 - Electric lamp and discharge devices