3819906

Information

• Patent Grant
• 3819906

• References
• Source

• Patent Number

  3,819,906

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1974
  50 years ago

• CPC

  • F24C7/087 - of electric circuits regulating heat
  • G05B19/104 - characterised by physical layout of switches; switches co-operating with display; use of switches in a special way
  • G05D23/1917 - using digital means
  • G05D23/24 - the sensing element having a resistance varying with temperature
  • G05B2219/23378 - Touch sensitive key
  • Y10T307/951 - With time delay or retardation means

• US Classifications

  • 219 - Electric heating
  • 307 - Electrical transmission or interconnection systems
  • 340 - Communications: electrical
  • 700 - Data processing: generic control systems or specific applications