2764972

Information

• Patent Grant
• 2764972

• References
• Source

• Patent Number

  2,764,972

• Date Filed

  Not available

• Date Issued

  Tuesday, October 2, 1956
  68 years ago

• CPC

  • F23J13/025 - composed of concentric elements
  • F24C15/002 - for stoves of the closed type
  • F23J2211/101 - with coaxial duct arrangement
  • F23J2211/20 - Common flues for several combustion devices
  • F23J2211/30 - Chimney or flue associated with building ventilation system

• US Classifications

  • 126 - Stoves and furnaces
  • 237 - Heating systems
  • 454 - Ventilation