2215779

Information

• Patent Grant
• 2215779

• References
• Source

• Patent Number

  2,215,779

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1940
  84 years ago

• CPC

  • H01J25/32 - Tubes with plural reflection

• US Classifications

  • 331 - Oscillators
  • 313 - Electric lamp and discharge devices