2203328

Information

• Patent Grant
• 2203328

• References
• Source

• Patent Number

  2,203,328

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1940
  84 years ago

• CPC

  • H01L21/103 - Conversion of the selenium or tellurium to the conductive state

• US Classifications

  • 427 - Coating processes
  • 136 - Batteries: thermoelectric and photoelectric
  • 257 - Active solid-state devices