3813039

Information

• Patent Grant
• 3813039

• References
• Source

• Patent Number

  3,813,039

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1974
  50 years ago

• CPC

  • F28D21/0008 - Air heaters
  • Y10S122/01 - Air heater
  • Y10S165/901 - Heat savers

• US Classifications

  • 237 - Heating systems
  • 110 - Furnaces
  • 122 - Liquid heaters and vaporizers
  • 126 - Stoves and furnaces
  • 165 - Heat exchange