1832571

Information

• Patent Grant
• 1832571

• References
• Source

• Patent Number

  1,832,571

• Date Filed

  Not available

• Date Issued

  Tuesday, November 17, 1931
  93 years ago

• CPC

  • E04B1/82 - specifically with respect to sound only
  • E04B2001/8461 - layered
  • Y10T428/24413 - Metal or metal compound
  • Y10T428/24421 - Silicon containing
  • Y10T442/116 - Including a woven fabric which is not a scrim
  • Y10T442/121 - Including a nonwoven fabric which is not a scrim

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 181 - Acoustics
  • 442 - Fabric