3230859

Information

• Patent Grant
• 3230859

• References
• Source

• Patent Number

  3,230,859

• Date Filed

  Not available

• Date Issued

  Tuesday, January 25, 1966
  59 years ago

• CPC

  • F24F7/02 - Roof ventilation
  • E04D13/0351 - the parts pivoting about a fixed axis
  • E05F1/006 - by emergency conditions
  • E05F15/53 - for swinging wings
  • E05Y2201/422 - for opening
  • E05Y2201/448 - Fluid motors Details thereof
  • E05Y2900/152 - Roof windows
  • F24F2011/0098 - closing air passage in case of fire, excessive heat or smoke

• US Classifications

  • 454 - Ventilation
  • 049 - Movable or removable closures
  • 052 - Static structures