2212181

Information

• Patent Grant
• 2212181

• References
• Source

• Patent Number

  2,212,181

• Date Filed

  Not available

• Date Issued

  Tuesday, August 20, 1940
  84 years ago

• CPC

  • E04B1/994 - Acoustical surfaces with adjustment mechanisms
  • E04B2001/8272 - Resiliently mounted wall cladding acting as a diaphragmatic sound damper

• US Classifications

  • 181 - Acoustics