1834275

Information

• Patent Grant
• 1834275

• References
• Source

• Patent Number

  1,834,275

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1931
  93 years ago

• CPC

  • H01L21/161 - Preparation of the foundation plate, preliminary treatment oxidation of the foundation plate, reduction treatment

• US Classifications

  • 148 - Metal treatment
  • 252 - Compositions
  • 257 - Active solid-state devices
  • 427 - Coating processes