2011922

Information

• Patent Grant
• 2011922

• References
• Source

• Patent Number

  2,011,922

• Date Filed

  Not available

• Date Issued

  Tuesday, August 20, 1935
  89 years ago

• CPC

  • H01J17/58 - with more than one cathode or anode

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 148 - Metal treatment