3400252

Information

• Patent Grant
• 3400252

• References
• Source

• Patent Number

  3,400,252

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1968
  56 years ago

• CPC

  • H01C7/022 - mainly consisting of non-metallic substances
  • A47J36/2438 - for warming a water-bath or -jacket
  • G05D23/1919 - characterised by the type of controller
  • G05D23/2401 - using a heating element as a sensing element

• US Classifications

  • 219 - Electric heating
  • 122 - Liquid heaters and vaporizers