1856404

Information

• Patent Grant
• 1856404

• References
• Source

• Patent Number

  1,856,404

• Date Filed

  Not available

• Date Issued

  Tuesday, May 3, 1932
  92 years ago

• CPC

  • H01J13/18 - Cooling or heating of anodes

• US Classifications

  • 313 - Electric lamp and discharge devices