3541945

Information

• Patent Grant
• 3541945

• References
• Source

• Patent Number

  3,541,945

• Date Filed

  Not available

• Date Issued

  Tuesday, November 24, 1970
  54 years ago

• CPC

  • F24F11/043 - dependent on air-current or wind pressure
  • F23L17/02 - Tops for chimneys or ventilating shafts Terminals for flues
  • Y10S454/902 - Air raid shelter ventilation

• US Classifications

  • 454 - Ventilation
  • 251 - Valves and valve actuation
  • D23 - Environmental heating and cooling