3852566

Information

• Patent Grant
• 3852566

• References
• Source

• Patent Number

  3,852,566

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1974
  50 years ago

• CPC

  • F24H1/185 - using electric energy supply
  • H01C7/04 - having negative temperature coefficient
  • H01C17/10 - by flame spraying
  • H05B3/141 - Conductive ceramics
  • H05B3/262 - the insulating base being an insulated metal plate
  • H05B2203/021 - Heaters specially adapted for heating liquids

• US Classifications

  • 392 - Electric resistance heating devices
  • 219 - Electric heating
  • 338 - Electrical resistors