2204391

Information

• Patent Grant
• 2204391

• References
• Source

• Patent Number

  2,204,391

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1940
  84 years ago

• CPC

  • H01J9/042 - Manufacture, activation of the emissive part
  • H01J1/146 - with metals or alloys as an emissive material
  • Y10T428/2958 - Metal or metal compound in coating

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 075 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
  • 205 - Electrolysis: processes, compositions used therein, and methods of preparing the compositions
  • 252 - Compositions
  • 427 - Coating processes
  • 428 - Stock material or miscellaneous articles