3820526

Information

• Patent Grant
• 3820526

• References
• Source

• Patent Number

  3,820,526

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • F24H3/087 - using fluid combustibles
  • F24H9/0052 - for air heaters
  • F23N2033/10 - forcing air through heat exchangers
  • F23N2035/16 - variable flow or proportional valves
  • F23N2035/18 - Groups of two or more valves
  • F23N2037/02 - two or more burners

• US Classifications

  • 126 - Stoves and furnaces
  • 110 - Furnaces