3501620

Information

• Patent Grant
• 3501620

• References
• Source

• Patent Number

  3,501,620

• Date Filed

  Not available

• Date Issued

  Tuesday, March 17, 1970
  54 years ago

• CPC

  • H05B1/0225 - actuated by timers
  • A23B7/045 - Thawing subsequent to freezing
  • A23L3/365 - Thawing subsequent to freezing
  • F24C7/087 - of electric circuits regulating heat
  • F24C15/325 - electrically-heated
  • G05D23/1912 - whose output amplitude can take more than two discrete values
  • G05D23/1919 - characterised by the type of controller
  • G05D23/1935 - using sequential control
  • G05D23/1951 - with control of the working time of a temperature controlling device
  • G05D23/275 - with sensing element expanding, contracting, or fusing in response to changes of temperature

• US Classifications

  • 219 - Electric heating
  • 099 - Foods and beverages: apparatus
  • 126 - Stoves and furnaces