2810526

Information

• Patent Grant
• 2810526

• References
• Source

• Patent Number

  2,810,526

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1957
  67 years ago

• CPC

  • G05D23/2239 - using photoelectric elements

• US Classifications

  • 236 - Automatic temperature and humidity regulation
  • 219 - Electric heating
  • 373 - Industrial electric heating furnaces