3330377

Information

• Patent Grant
• 3330377

• References
• Source

• Patent Number

  3,330,377

• Date Filed

  Not available

• Date Issued

  Tuesday, July 11, 1967
  57 years ago

• CPC

  • E04B1/86 - slab-shaped
  • C04B20/0008 - Materials specified by a shape not covered by C04B20/0016 - C04B20/0056
  • E04C2/16 - of fibres, chips, vegetable stems, or the like
  • C04B2111/52 - Sound-insulating materials
  • E04B2001/8461 - layered
  • E04B2001/848 - the cavities opening onto the face of the element
  • Y10T428/1303 - Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
  • Y10T428/24942 - including components having same physical characteristic in differing degree
  • Y10T428/31652 - Of asbestos

• US Classifications

  • 181 - Acoustics
  • 428 - Stock material or miscellaneous articles