2948799

Information

• Patent Grant
• 2948799

• References
• Source

• Patent Number

  2,948,799

• Date Filed

  Not available

• Date Issued

  Tuesday, August 9, 1960
  64 years ago

• CPC

  • G05D23/2239 - using photoelectric elements

• US Classifications

  • 219 - Electric heating
  • 236 - Automatic temperature and humidity regulation
  • 250 - Radiant energy
  • 361 - Electricity: electrical systems and devices
  • 373 - Industrial electric heating furnaces
  • 392 - Electric resistance heating devices