3141520

Information

• Patent Grant
• 3141520

• References
• Source

• Patent Number

  3,141,520

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1964
  60 years ago

• CPC

  • F16L55/02754 - using a central core throttling the passage

• US Classifications

  • 181 - Acoustics