2100782

Information

• Patent Grant
• 2100782

• References
• Source

• Patent Number

  2,100,782

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1937
  87 years ago

• CPC

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

• US Classifications

  • 049 - Movable or removable closures
  • 454 - Ventilation