2807329

Information

• Patent Grant
• 2807329

• References
• Source

• Patent Number

  2,807,329

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1957
  67 years ago

• CPC

  • F16L55/02727 - placed parallel to the axis of the pipe

• US Classifications

  • 181 - Acoustics
  • 454 - Ventilation