2127672

Information

• Patent Grant
• 2127672

• References
• Source

• Patent Number

  2,127,672

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1938
  86 years ago

• CPC

  • F16L55/02754 - using a central core throttling the passage
  • G10K11/172 - using resonance effects

• US Classifications

  • 181 - Acoustics