2741972

Information

• Patent Grant
• 2741972

• References
• Source

• Patent Number

  2,741,972

• Date Filed

  Not available

• Date Issued

  Tuesday, April 17, 1956
  68 years ago

• CPC

  • F24F7/02 - Roof ventilation
  • F23L17/02 - Tops for chimneys or ventilating shafts Terminals for flues
  • Y10S454/904 - Magnetic means to hold a damper closed

• US Classifications

  • 454 - Ventilation
  • D23 - Environmental heating and cooling