3628442

Information

• Patent Grant
• 3628442

• References
• Source

• Patent Number

  3,628,442

• Date Filed

  Not available

• Date Issued

  Tuesday, December 21, 1971
  53 years ago

• CPC

  • A01K31/22 - Poultry runs; Poultry houses, including auxiliary features
  • E06B7/02 - for providing ventilation
  • F24F7/013 - using wall or window fans, displacing air through the wall or window possibly through a grill or through a shutter or flap
  • F24F13/08 - Air-flow control members
  • F24F13/082 - Grilles, registers or guards
  • Y10S454/905 - Black out means

• US Classifications

  • 454 - Ventilation