3401621

Information

• Patent Grant
• 3401621

• References
• Source

• Patent Number

  3,401,621

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1968
  56 years ago

• CPC

  • A01K1/0058 - Construction of air inlets or outlets in roofs
  • F24F7/025 - with forced air circulation by means of a built-in ventilator
  • F24F7/065 - fan combined with single duct; mounting arrangements of a fan in a duct
  • F24F13/1413 - using more than one tilting member
  • F24F13/1426 - characterised by actuating means
  • F24F11/0012 - Air temperature
  • F24F2013/1433 - with electric motors
  • F24F2013/1453 - with cables

• US Classifications

  • 454 - Ventilation