3686809

Information

• Patent Grant
• 3686809

• References
• Source

• Patent Number

  3,686,809

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1972
  52 years ago

• CPC

  • E04B1/49 - with self-penetrating parts
  • E04C3/18 - with metal or other reinforcements or tensioning members
  • E04F15/04 - only of wood or with a top layer of wood
  • F16B15/0046 - from the body of the plate
  • E04F2015/0205 - with load-supporting elongated furring elements between the flooring elements and the underlayer
  • E04F2201/0511 - Strips or bars
  • F16B2015/0069 - with nails on both sides

• US Classifications

  • 052 - Static structures
  • 144 - Woodworking