3659782

Information

• Patent Grant
• 3659782

• References
• Source

• Patent Number

  3,659,782

• Date Filed

  Not available

• Date Issued

  Tuesday, May 2, 1972
  52 years ago

• CPC

  • G05D23/303 - using a sensing element having a resistance varying with temperature
  • G05D23/1912 - whose output amplitude can take more than two discrete values
  • G05D23/24 - the sensing element having a resistance varying with temperature

• US Classifications

  • 236 - Automatic temperature and humidity regulation
  • 219 - Electric heating
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems