3635784

Information

• Patent Grant
• 3635784

• References
• Source

• Patent Number

  3,635,784

• Date Filed

  Not available

• Date Issued

  Tuesday, January 18, 1972
  53 years ago

• CPC

  • E06B5/16 - Fireproof doors or similar closures Adaptations of fixed constructions therefor
  • E04C2/18 - with binding wires, reinforcing bars, or the like
  • E04C2/36 - spaced apart by transversely-placed strip material
  • E06B3/7015 - characterised by the filling between two external panels
  • E06B2003/7025 - of cork; of wood or similar fibres
  • E06B2003/7026 - of granular type
  • Y10T428/233 - Foamed or expanded material encased
  • Y10T428/234 - including elements cooperating to form cells
  • Y10T428/249965 - Cellulosic
  • Y10T428/249971 - Preformed hollow element-containing
  • Y10T428/249973 - Mineral element
  • Y10T428/253 - Cellulosic [e.g., wood, paper, cork, rayon, etc.]
  • Y10T428/3167 - Of cork

• US Classifications

  • 428 - Stock material or miscellaneous articles