1440810

Information

• Patent Grant
• 1440810

• References
• Source

• Patent Number

  1,440,810

• Date Filed

  Not available

• Date Issued

  Tuesday, January 2, 1923
  102 years ago

• CPC

  • F24D12/02 - having more than one heat source
  • F24D2200/06 - Solid fuel fired boiler
  • F24D2200/18 - Flue gas recuperation
  • Y02B10/70 - Hybrid systems
  • Y02B30/14 - Central heating systems having more than one heat source

• US Classifications

  • 237 - Heating systems
  • 122 - Liquid heaters and vaporizers