3597891

Information

• Patent Grant
• 3597891

• References
• Source

• Patent Number

  3,597,891

• Date Filed

  Not available

• Date Issued

  Tuesday, August 10, 1971
  53 years ago

• CPC

  • E04B1/8409 - sheet-shaped
  • B62D29/04 - predominantly of synthetic material
  • B64C1/40 - Sound or heat insulation
  • E04C2/3405 - spaced apart by profiled spacer sheets
  • E04B2001/8428 - containing specially shaped acoustical bodies
  • E04B2001/8461 - layered
  • E04B2001/8471 - with non-planar interior transition surfaces between layers
  • E04B2001/8476 - with acoustical cavities, with or without acoustical filling
  • E04C2002/3427 - with conical dimples
  • E04C2002/3438 - with saddle-shaped dimples
  • Y10T428/24661 - Forming, or cooperating to form cells

• US Classifications

  • 052 - Static structures
  • 428 - Stock material or miscellaneous articles