3411256

Information

• Patent Grant
• 3411256

• References
• Source

• Patent Number

  3,411,256

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1968
  56 years ago

• CPC

  • E04D13/1662 - Inverted roofs or exteriorly insulated roofs
  • E04D3/351 - at least one of the layers being composed of insulating material
  • E04D3/352 - at least one insulating layer being located between non-insulating layers
  • E04D11/02 - Build-up roofs
  • E04D13/16 - Insulating devices or arrangements in so far as the roof covering is concerned
  • Y10T428/249976 - Voids specified as closed
  • Y10T428/249981 - Plural void-containing components

• US Classifications

  • 052 - Static structures
  • 428 - Stock material or miscellaneous articles