2456758

Information

• Patent Grant
• 2456758

• References
• Source

• Patent Number

  2,456,758

• Date Filed

  Not available

• Date Issued

  Tuesday, December 21, 1948
  76 years ago

• CPC

  • H01L21/145 - Ageing
  • H01L21/108 - Provision of discrete insulating layers

• US Classifications

  • 257 - Active solid-state devices
  • 313 - Electric lamp and discharge devices