3846949

Information

• Patent Grant
• 3846949

• References
• Source

• Patent Number

  3,846,949

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1974
  50 years ago

• CPC

  • E04B1/8404 - block-shaped
  • E01F8/007 - with damping material
  • E04B2001/8423 - Tray or frame type panels or blocks, with or without acoustical filling
  • E04B2001/8428 - containing specially shaped acoustical bodies
  • E04B2001/8438 - Slot shaped holes
  • E04B2001/8442 - Tray type elements

• US Classifications

  • 052 - Static structures
  • 181 - Acoustics