3667175

Information

• Patent Grant
• 3667175

• References
• Source

• Patent Number

  3,667,175

• Date Filed

  Not available

• Date Issued

  Tuesday, June 6, 1972
  52 years ago

• CPC

  • E04B1/84 - Sound-absorbing elements
  • E04B1/168 - flexible
  • E04B1/76 - specifically with respect to heat only
  • E04B2/8664 - using flexible material as form leaves

• US Classifications

  • 052 - Static structures
  • 181 - Acoustics