2796946

Information

• Patent Grant
• 2796946

• References
• Source

• Patent Number

  2,796,946

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1957
  67 years ago

• CPC

  • E04B1/86 - slab-shaped
  • C04B28/14 - containing calcium sulfate cements
  • C04B2111/00094 - Sag-resistant materials
  • C04B2111/28 - Fire resistance
  • C04B2111/52 - Sound-insulating materials
  • E04B2001/848 - the cavities opening onto the face of the element
  • E04B2001/849 - Groove or slot type openings

• US Classifications

  • 181 - Acoustics
  • 106 - Compositions: coating or plastic
  • D25 - Building units and construction elements