3251158

Information

• Patent Grant
• 3251158

• References
• Source

• Patent Number

  3,251,158

• Date Filed

  Not available

• Date Issued

  Tuesday, May 17, 1966
  59 years ago

• CPC

  • E04D13/0352 - the parts being of domed or pyramidal shape
  • F24F7/02 - Roof ventilation
  • F24F2011/0097 - opening air passage in case of fire, excessive heat or smoke
  • Y10T292/0931 - Flexible

• US Classifications

  • 052 - Static structures
  • 049 - Movable or removable closures
  • 292 - Closure fasteners