3516198

Information

• Patent Grant
• 3516198

• References
• Source

• Patent Number

  3,516,198

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1970
  54 years ago

• CPC

  • E04D13/0351 - the parts pivoting about a fixed axis
  • F24F7/02 - Roof ventilation
  • F24F2011/0097 - opening air passage in case of fire, excessive heat or smoke
  • Y10T292/202 - Hatch fastener

• US Classifications

  • 049 - Movable or removable closures
  • 292 - Closure fasteners
  • 454 - Ventilation