3651307

Information

• Patent Grant
• 3651307

• References
• Source

• Patent Number

  3,651,307

• Date Filed

  Not available

• Date Issued

  Tuesday, March 21, 1972
  53 years ago

• CPC

  • G05D23/30 - Automatic controllers with an auxiliary heating device affecting the sensing element
  • G05D23/306 - using semiconductor devices

• US Classifications

  • 219 - Electric heating