2239770

Information

• Patent Grant
• 2239770

• References
• Source

• Patent Number

  2,239,770

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1941
  83 years ago

• CPC

  • H01C1/142 - the terminals or tapping points being coated on the resistive element
  • H01L21/12 - Application of an electrode to the exposed surface of the selenium or tellurium after the selenium or tellurium has been applied to the foundation plate
  • H01L21/167 - Application of a non-genetic conductive layer
  • Y10T428/24917 - including metal layer

• US Classifications

  • 438 - Semiconductor device manufacturing: process
  • 118 - Coating apparatus
  • 257 - Active solid-state devices
  • 428 - Stock material or miscellaneous articles