3200734

Information

• Patent Grant
• 3200734

• References
• Source

• Patent Number

  3,200,734

• Date Filed

  Not available

• Date Issued

  Tuesday, August 17, 1965
  59 years ago

• CPC

  • E04B9/0442 - having a honeycomb core
  • E04B9/045 - being laminated
  • F24F13/068 - formed as perforated walls, ceilings or floors

• US Classifications

  • 454 - Ventilation
  • 181 - Acoustics