2121789

Information

• Patent Grant
• 2121789

• References
• Source

• Patent Number

  2,121,789

• Date Filed

  Not available

• Date Issued

  Tuesday, June 28, 1938
  87 years ago

• CPC

  • E04D11/00 - Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00 Roof covering in ways not provided for by groups E04D1/00 - E04D9/00
  • E04D13/0431 - with horizontal evacuation over the border of the roof
  • E04D13/0477 - Underroof drainage layers
  • E04D2013/049 - of condensation water or infiltrated rainwater

• US Classifications

  • 052 - Static structures
  • 454 - Ventilation