3804196

Information

• Patent Grant
• 3804196

• References
• Source

• Patent Number

  3,804,196

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1974
  50 years ago

• CPC

  • E04B2/7409 - special measures for sound or thermal insulation, including fire protection
  • E01F8/007 - with damping material
  • E04B1/8404 - block-shaped
  • E04B2001/8263 - Mounting of acoustical elements on supporting structure
  • E04B2001/8423 - Tray or frame type panels or blocks, with or without acoustical filling
  • E04B2001/8433 - with holes in their face

• US Classifications

  • 181 - Acoustics
  • 052 - Static structures