2521687

Information

• Patent Grant
• 2521687

• References
• Source

• Patent Number

  2,521,687

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1950
  74 years ago

• CPC

  • H01L21/14 - Treatment of the complete device
  • Y10T29/413 - Barrier layer device making

• US Classifications

  • 029 - Metal working
  • 257 - Active solid-state devices