3706271

Information

• Patent Grant
• 3706271

• References
• Source

• Patent Number

  3,706,271

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1972
  52 years ago

• CPC

  • A01K31/00 - Housing birds
  • A01K1/0064 - Construction of air inlets or outlets in walls
  • F24F7/00 - Ventilation
  • F24F13/1426 - characterised by actuating means
  • F24F2013/1433 - with electric motors
  • F24F2013/1453 - with cables

• US Classifications

  • 454 - Ventilation