2217402

Information

• Patent Grant
• 2217402

• References
• Source

• Patent Number

  2,217,402

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1940
  85 years ago

• CPC

  • H01L21/08 - Preparation of the foundation plate
  • H02K23/10 - having compound connection of excitation windings

• US Classifications

  • 136 - Batteries: thermoelectric and photoelectric
  • 257 - Active solid-state devices