2691144

Information

• Patent Grant
• 2691144

• References
• Source

• Patent Number

  2,691,144

• Date Filed

  Not available

• Date Issued

  Tuesday, October 5, 1954
  70 years ago

• CPC

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

• US Classifications

  • 204 - Chemistry: electrical and wave energy
  • 029 - Metal working
  • 257 - Active solid-state devices
  • 269 - Work holders
  • 414 - Material or article handling