3897854

Information

• Patent Grant
• 3897854

• References
• Source

• Patent Number

  3,897,854

• Date Filed

  Not available

• Date Issued

  Tuesday, August 5, 1975
  49 years ago

• CPC

  • F01N1/165 - for adjusting flow area
  • F01N1/22 - the parts being resilient walls
  • F02B75/34 - Ultra-small engines
  • Y10S181/404 - Hobby craft engine muffler

• US Classifications

  • 181 - Acoustics