2390262

Information

• Patent Grant
• 2390262

• References
• Source

• Patent Number

  2,390,262

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1945
  79 years ago

• CPC

  • E04B1/82 - specifically with respect to sound only
  • E04B1/8209 - sound absorbing devices
  • E04B2001/747 - Corrugated materials
  • E04B2001/829 - Flat elements mounted at an angle
  • E04B2001/8414 - with non-planar face
  • E04B2001/8442 - Tray type elements
  • E04B2001/8447 - with two faacing trays

• US Classifications

  • 052 - Static structures
  • 181 - Acoustics