3648074

Information

• Patent Grant
• 3648074

• References
• Source

• Patent Number

  3,648,074

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1972
  53 years ago

• CPC

  • G05B11/16 - Two-step controllers
  • G05D23/1909 - whose output amplitude can only take two discrete values
  • G05D23/24 - the sensing element having a resistance varying with temperature

• US Classifications

  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 219 - Electric heating